51255258 has 16 divisors (see below), whose sum is σ = 102582720. Its totient is φ = 17073056.

The previous prime is 51255257. The next prime is 51255283. The reversal of 51255258 is 85255215.

It is not an unprimeable number, because it can be changed into a prime (51255257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11923 + ... + 15641.

It is an arithmetic number, because the mean of its divisors is an integer number (6411420).

Almost surely, 2^51255258 is an apocalyptic number.

51255258 is an abundant number, since it is smaller than the sum of its proper divisors (51327462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51255258 is a wasteful number, since it uses less digits than its factorization.

51255258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6021.

The product of its digits is 20000, while the sum is 33.

The square root of 51255258 is about 7159.2777568691. The cubic root of 51255258 is about 371.4606445536.

The spelling of 51255258 in words is "fifty-one million, two hundred fifty-five thousand, two hundred fifty-eight".