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58387550 = 25213432089
BaseRepresentation
bin1101111010111…
…0110001011110
311001212101122212
43132232301132
5104421400200
65443240422
71306200044
oct336566136
9131771585
1058387550
112aa5a481
1217679112
13c134060
147a7c394
1551d5035
hex37aec5e

58387550 has 48 divisors (see below), whose sum is σ = 119731920. Its totient is φ = 21047040.

The previous prime is 58387543. The next prime is 58387559. The reversal of 58387550 is 5578385.

It is a junction number, because it is equal to n+sod(n) for n = 58387498 and 58387507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (58387559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26906 + ... + 28994.

It is an arithmetic number, because the mean of its divisors is an integer number (2494415).

Almost surely, 258387550 is an apocalyptic number.

58387550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

58387550 is an abundant number, since it is smaller than the sum of its proper divisors (61344370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

58387550 is a wasteful number, since it uses less digits than its factorization.

With its successor (58387551) it forms an eRAP, since the sums of their prime factors are consecutive (2157 and 2158).

58387550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157 (or 2152 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 41.

The square root of 58387550 is about 7641.1746479190. The cubic root of 58387550 is about 387.9479107811.

The spelling of 58387550 in words is "fifty-eight million, three hundred eighty-seven thousand, five hundred fifty".

Divisors: 1 2 5 10 13 25 26 43 50 65 86 130 215 325 430 559 650 1075 1118 2089 2150 2795 4178 5590 10445 13975 20890 27157 27950 52225 54314 89827 104450 135785 179654 271570 449135 678925 898270 1167751 1357850 2245675 2335502 4491350 5838755 11677510 29193775 58387550