56545177457 has 4 divisors (see below), whose sum is σ = 56549898816. Its totient is φ = 56540456100.

The previous prime is 56545177441. The next prime is 56545177489. The reversal of 56545177457 is 75477154565.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56545177457 - 2⁴ = 56545177441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56545177957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2342669 + ... + 2366682.

It is an arithmetic number, because the mean of its divisors is an integer number (14137474704).

Almost surely, 2^56545177457 is an apocalyptic number.

It is an amenable number.

56545177457 is a deficient number, since it is larger than the sum of its proper divisors (4721359).

56545177457 is a wasteful number, since it uses less digits than its factorization.

56545177457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4721358.

The product of its digits is 20580000, while the sum is 56.

The spelling of 56545177457 in words is "fifty-six billion, five hundred forty-five million, one hundred seventy-seven thousand, four hundred fifty-seven".