51535464 has 32 divisors (see below), whose sum is σ = 129084000. Its totient is φ = 17145792.

The previous prime is 51535441. The next prime is 51535493. The reversal of 51535464 is 46453515.

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, 13122 + ... + 16590.

It is an arithmetic number, because the mean of its divisors is an integer number (4033875).

Almost surely, 2^51535464 is an apocalyptic number.

It is an amenable number.

51535464 is an abundant number, since it is smaller than the sum of its proper divisors (77548536).

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

51535464 is a wasteful number, since it uses less digits than its factorization.

51535464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4097 (or 4093 counting only the distinct ones).

The product of its digits is 36000, while the sum is 33.

The square root of 51535464 is about 7178.8205159344. The cubic root of 51535464 is about 372.1363241834.

Adding to 51535464 its reverse (46453515), we get a palindrome (97988979).

The spelling of 51535464 in words is "fifty-one million, five hundred thirty-five thousand, four hundred sixty-four".