56115145 has 16 divisors (see below), whose sum is σ = 70094160. Its totient is φ = 43074304.

The previous prime is 56115139. The next prime is 56115149. The reversal of 56115145 is 54151165.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 6215049 + 49900096 = 2493^2 + 7064^2 .

It is a cyclic number.

It is not a de Polignac number, because 56115145 - 2¹¹ = 56113097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56115149) 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, 23967 + ... + 26203.

It is an arithmetic number, because the mean of its divisors is an integer number (4380885).

Almost surely, 2^56115145 is an apocalyptic number.

It is an amenable number.

56115145 is a deficient number, since it is larger than the sum of its proper divisors (13979015).

56115145 is a wasteful number, since it uses less digits than its factorization.

56115145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444.

The product of its digits is 3000, while the sum is 28.

The square root of 56115145 is about 7491.0042717916. The cubic root of 56115145 is about 382.8482766341.

The spelling of 56115145 in words is "fifty-six million, one hundred fifteen thousand, one hundred forty-five".