51297470 has 32 divisors (see below), whose sum is σ = 106100928. Its totient is φ = 17491968.

The previous prime is 51297469. The next prime is 51297487. The reversal of 51297470 is 7479215.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 51297470.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11612 + ... + 15408.

It is an arithmetic number, because the mean of its divisors is an integer number (3315654).

Almost surely, 2^51297470 is an apocalyptic number.

51297470 is an abundant number, since it is smaller than the sum of its proper divisors (54803458).

51297470 is a wasteful number, since it uses less digits than its factorization.

51297470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4004.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 51297470 is about 7162.2252128790. The cubic root of 51297470 is about 371.5625904793.

The spelling of 51297470 in words is "fifty-one million, two hundred ninety-seven thousand, four hundred seventy".