51492474 has 48 divisors (see below), whose sum is σ = 124697664. Its totient is φ = 15220800.

The previous prime is 51492443. The next prime is 51492491. The reversal of 51492474 is 47429415.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4947 + ... + 11289.

It is an arithmetic number, because the mean of its divisors is an integer number (2597868).

Almost surely, 2^51492474 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51492474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62348832).

51492474 is an abundant number, since it is smaller than the sum of its proper divisors (73205190).

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

51492474 is a wasteful number, since it uses less digits than its factorization.

51492474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6403 (or 6400 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 51492474 is about 7175.8256667787. The cubic root of 51492474 is about 372.0328188180.

The spelling of 51492474 in words is "fifty-one million, four hundred ninety-two thousand, four hundred seventy-four".