56117545 has 32 divisors (see below), whose sum is σ = 78382080. Its totient is φ = 38139840.

The previous prime is 56117531. The next prime is 56117549. The reversal of 56117545 is 54571165.

It is not a de Polignac number, because 56117545 - 2²⁵ = 22563113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56117545.

It is not an unprimeable number, because it can be changed into a prime (56117549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86412 + ... + 87058.

It is an arithmetic number, because the mean of its divisors is an integer number (2449440).

Almost surely, 2^56117545 is an apocalyptic number.

56117545 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56117545 is a deficient number, since it is larger than the sum of its proper divisors (22264535).

56117545 is a wasteful number, since it uses less digits than its factorization.

56117545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765.

The product of its digits is 21000, while the sum is 34.

The square root of 56117545 is about 7491.1644622181. The cubic root of 56117545 is about 382.8537345948.

The spelling of 56117545 in words is "fifty-six million, one hundred seventeen thousand, five hundred forty-five".