56123155 has 16 divisors (see below), whose sum is σ = 74191104. Its totient is φ = 40416480.

The previous prime is 56123147. The next prime is 56123159. The reversal of 56123155 is 55132165.

It is not a de Polignac number, because 56123155 - 2³ = 56123147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56123159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 712 + ... + 10618.

It is an arithmetic number, because the mean of its divisors is an integer number (4636944).

Almost surely, 2^56123155 is an apocalyptic number.

56123155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

56123155 is a deficient number, since it is larger than the sum of its proper divisors (18067949).

56123155 is a wasteful number, since it uses less digits than its factorization.

56123155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10026.

The product of its digits is 4500, while the sum is 28.

The square root of 56123155 is about 7491.5388939790. The cubic root of 56123155 is about 382.8664919709.

It can be divided in two parts, 561 and 23155, that added together give a square (23716 = 154²).

The spelling of 56123155 in words is "fifty-six million, one hundred twenty-three thousand, one hundred fifty-five".