56156155 has 16 divisors (see below), whose sum is σ = 73932768. Its totient is φ = 40608000.

The previous prime is 56156143. The next prime is 56156189. The reversal of 56156155 is 55165165.

It is not a de Polignac number, because 56156155 - 2⁷ = 56156027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56156155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7135 + ... + 12775.

It is an arithmetic number, because the mean of its divisors is an integer number (4620798).

Almost surely, 2^56156155 is an apocalyptic number.

56156155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

56156155 is a deficient number, since it is larger than the sum of its proper divisors (17776613).

56156155 is a wasteful number, since it uses less digits than its factorization.

56156155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5838.

The product of its digits is 22500, while the sum is 34.

The square root of 56156155 is about 7493.7410550405. The cubic root of 56156155 is about 382.9415181563.

The spelling of 56156155 in words is "fifty-six million, one hundred fifty-six thousand, one hundred fifty-five".