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56160391 = 722673539
BaseRepresentation
bin1101011000111…
…1000010000111
310220200020120111
43112033002013
5103334113031
65323413451
71251232630
oct326170207
9126606514
1056160391
1129779151
1216984287
13b834401
14765c887
154de51b1
hex358f087

56160391 has 8 divisors (see below), whose sum is σ = 64229760. Its totient is φ = 48102648.

The previous prime is 56160383. The next prime is 56160407. The reversal of 56160391 is 19306165.

56160391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 56160391 - 23 = 56160383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56160301) 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, 14100 + ... + 17638.

It is an arithmetic number, because the mean of its divisors is an integer number (8028720).

Almost surely, 256160391 is an apocalyptic number.

56160391 is a deficient number, since it is larger than the sum of its proper divisors (8069369).

56160391 is a wasteful number, since it uses less digits than its factorization.

56160391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5813.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 56160391 is about 7494.0236855777. The cubic root of 56160391 is about 382.9511466614.

The spelling of 56160391 in words is "fifty-six million, one hundred sixty thousand, three hundred ninety-one".

Divisors: 1 7 2267 3539 15869 24773 8022913 56160391