51258116 has 36 divisors (see below), whose sum is σ = 112379148. Its totient is φ = 20276928.

The previous prime is 51258113. The next prime is 51258131. The reversal of 51258116 is 61185215.

It can be written as a sum of positive squares in 2 ways, for example, as 9060100 + 42198016 = 3010^2 + 6496^2 .

It is not an unprimeable number, because it can be changed into a prime (51258113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7511 + ... + 12606.

It is an arithmetic number, because the mean of its divisors is an integer number (3121643).

Almost surely, 2^51258116 is an apocalyptic number.

It is an amenable number.

51258116 is an abundant number, since it is smaller than the sum of its proper divisors (61121032).

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

51258116 is a wasteful number, since it uses less digits than its factorization.

51258116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20148 (or 20139 counting only the distinct ones).

The product of its digits is 2400, while the sum is 29.

The square root of 51258116 is about 7159.4773552264. The cubic root of 51258116 is about 371.4675486569.

The spelling of 51258116 in words is "fifty-one million, two hundred fifty-eight thousand, one hundred sixteen".