51493512 has 48 divisors (see below), whose sum is σ = 149754960. Its totient is φ = 14712096.

The previous prime is 51493487. The next prime is 51493549. The reversal of 51493512 is 21539415.

It is a self number, because there is not a number n which added to its sum of digits gives 51493512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20718 + ... + 23069.

It is an arithmetic number, because the mean of its divisors is an integer number (3119895).

Almost surely, 2^51493512 is an apocalyptic number.

It is an amenable number.

51493512 is an abundant number, since it is smaller than the sum of its proper divisors (98261448).

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

51493512 is a wasteful number, since it uses less digits than its factorization.

51493512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43810 (or 43799 counting only the distinct ones).

The product of its digits is 5400, while the sum is 30.

The square root of 51493512 is about 7175.8979925860. The cubic root of 51493512 is about 372.0353186492.

The spelling of 51493512 in words is "fifty-one million, four hundred ninety-three thousand, five hundred twelve".