56021551145 has 16 divisors (see below), whose sum is σ = 80169972480. Its totient is φ = 36744569664.

The previous prime is 56021551133. The next prime is 56021551169. The reversal of 56021551145 is 54115512065.

It is a cyclic number.

It is not a de Polignac number, because 56021551145 - 2⁸ = 56021550889 is a prime.

It is a super-2 number, since 2×56021551145² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 34795190 + ... + 34796799.

It is an arithmetic number, because the mean of its divisors is an integer number (5010623280).

Almost surely, 2^56021551145 is an apocalyptic number.

It is an amenable number.

56021551145 is a deficient number, since it is larger than the sum of its proper divisors (24148421335).

56021551145 is a wasteful number, since it uses less digits than its factorization.

56021551145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69592024.

The product of its (nonzero) digits is 30000, while the sum is 35.

The spelling of 56021551145 in words is "fifty-six billion, twenty-one million, five hundred fifty-one thousand, one hundred forty-five".