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30113551 = 138272801
BaseRepresentation
bin111001011011…
…1111100001111
32002122221000201
41302313330033
530202113201
62553234331
7513650416
oct162677417
962587021
1030113551
1115aa8836
12a1029a7
136314890
143ddc47d
15299c801
hex1cb7f0f

30113551 has 8 divisors (see below), whose sum is σ = 32480784. Its totient is φ = 27753600.

The previous prime is 30113543. The next prime is 30113563. The reversal of 30113551 is 15531103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30113551 - 23 = 30113543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30113581) 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 7 ways as a sum of consecutive naturals, for example, 9351 + ... + 12151.

It is an arithmetic number, because the mean of its divisors is an integer number (4060098).

Almost surely, 230113551 is an apocalyptic number.

30113551 is a deficient number, since it is larger than the sum of its proper divisors (2367233).

30113551 is a wasteful number, since it uses less digits than its factorization.

30113551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3641.

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 30113551 is about 5487.5815255903. The cubic root of 30113551 is about 311.1147896343.

Adding to 30113551 its reverse (15531103), we get a palindrome (45644654).

The spelling of 30113551 in words is "thirty million, one hundred thirteen thousand, five hundred fifty-one".

Divisors: 1 13 827 2801 10751 36413 2316427 30113551