56426530291 has 8 divisors (see below), whose sum is σ = 56678722560. Its totient is φ = 56174472648.

The previous prime is 56426530289. The next prime is 56426530297. The reversal of 56426530291 is 19203562465.

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 56426530291 - 2¹ = 56426530289 is a prime.

It is a super-2 number, since 2×56426530291² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56426530297) 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, 859080 + ... + 922426.

It is an arithmetic number, because the mean of its divisors is an integer number (7084840320).

Almost surely, 2^56426530291 is an apocalyptic number.

56426530291 is a deficient number, since it is larger than the sum of its proper divisors (252192269).

56426530291 is a wasteful number, since it uses less digits than its factorization.

56426530291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67313.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 56426530291 in words is "fifty-six billion, four hundred twenty-six million, five hundred thirty thousand, two hundred ninety-one".