51424474 has 16 divisors (see below), whose sum is σ = 81480960. Its totient is φ = 24302880.

The previous prime is 51424427. The next prime is 51424523. The reversal of 51424474 is 47442415.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6979 + ... + 12310.

It is an arithmetic number, because the mean of its divisors is an integer number (5092560).

Almost surely, 2^51424474 is an apocalyptic number.

51424474 is a deficient number, since it is larger than the sum of its proper divisors (30056486).

51424474 is a wasteful number, since it uses less digits than its factorization.

51424474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19365.

The product of its digits is 17920, while the sum is 31.

The square root of 51424474 is about 7171.0859707578. The cubic root of 51424474 is about 371.8689801441.

Adding to 51424474 its reverse (47442415), we get a palindrome (98866889).

The spelling of 51424474 in words is "fifty-one million, four hundred twenty-four thousand, four hundred seventy-four".