51095155 has 4 divisors (see below), whose sum is σ = 61314192. Its totient is φ = 40876120.

The previous prime is 51095147. The next prime is 51095159. The reversal of 51095155 is 55159015.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51095155 - 2³ = 51095147 is a prime.

It is a super-2 number, since 2×51095155² = 5221429728948050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51095159) 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, 5109511 + ... + 5109520.

It is an arithmetic number, because the mean of its divisors is an integer number (15328548).

Almost surely, 2^51095155 is an apocalyptic number.

51095155 is a deficient number, since it is larger than the sum of its proper divisors (10219037).

51095155 is a wasteful number, since it uses less digits than its factorization.

51095155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10219036.

The product of its (nonzero) digits is 5625, while the sum is 31.

The square root of 51095155 is about 7148.0875064593. The cubic root of 51095155 is about 371.0734713048.

The spelling of 51095155 in words is "fifty-one million, ninety-five thousand, one hundred fifty-five".