51290464 has 12 divisors (see below), whose sum is σ = 100978164. Its totient is φ = 25645216.

The previous prime is 51290453. The next prime is 51290501. The reversal of 51290464 is 46409215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 801382 + ... + 801445.

It is an arithmetic number, because the mean of its divisors is an integer number (8414847).

Almost surely, 2^51290464 is an apocalyptic number.

It is an amenable number.

51290464 is a deficient number, since it is larger than the sum of its proper divisors (49687700).

51290464 is a wasteful number, since it uses less digits than its factorization.

51290464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602837 (or 1602829 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 51290464 is about 7161.7361023707. The cubic root of 51290464 is about 371.5456742062.

Adding to 51290464 its reverse (46409215), we get a palindrome (97699679).

The spelling of 51290464 in words is "fifty-one million, two hundred ninety thousand, four hundred sixty-four".