64056155 has 4 divisors (see below), whose sum is σ = 76867392. Its totient is φ = 51244920.

The previous prime is 64056151. The next prime is 64056203. The reversal of 64056155 is 55165046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55165046 = 2 ⋅27582523.

It is not a de Polignac number, because 64056155 - 2² = 64056151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64056151) 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, 6405611 + ... + 6405620.

It is an arithmetic number, because the mean of its divisors is an integer number (19216848).

Almost surely, 2^64056155 is an apocalyptic number.

64056155 is a deficient number, since it is larger than the sum of its proper divisors (12811237).

64056155 is a wasteful number, since it uses less digits than its factorization.

64056155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12811236.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 64056155 is about 8003.5089179684. The cubic root of 64056155 is about 400.1169553836.

The spelling of 64056155 in words is "sixty-four million, fifty-six thousand, one hundred fifty-five".