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52457980 = 2252639973
BaseRepresentation
bin1100100000011…
…1000111111100
310122201010211011
43020013013330
5101412123410
65112205004
71204612501
oct310070774
9118633734
1052457980
112767a503
1215699764
13ab39133
146d774a8
15491318a
hex32071fc

52457980 has 24 divisors (see below), whose sum is σ = 110591712. Its totient is φ = 20901312.

The previous prime is 52457953. The next prime is 52457981. The reversal of 52457980 is 8975425.

52457980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52457981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274 + ... + 10246.

It is an arithmetic number, because the mean of its divisors is an integer number (4607988).

Almost surely, 252457980 is an apocalyptic number.

It is an amenable number.

52457980 is an abundant number, since it is smaller than the sum of its proper divisors (58133732).

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

52457980 is a wasteful number, since it uses less digits than its factorization.

52457980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10245 (or 10243 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 52457980 is about 7242.7881371748. The cubic root of 52457980 is about 374.3436935164.

It can be divided in two parts, 5245 and 7980, that added together give a square (13225 = 1152).

The spelling of 52457980 in words is "fifty-two million, four hundred fifty-seven thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 263 526 1052 1315 2630 5260 9973 19946 39892 49865 99730 199460 2622899 5245798 10491596 13114495 26228990 52457980