51504512 has 16 divisors (see below), whose sum is σ = 102606900. Its totient is φ = 25752192.

The previous prime is 51504511. The next prime is 51504529. The reversal of 51504512 is 21540515.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51504511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201062 + ... + 201317.

Almost surely, 2^51504512 is an apocalyptic number.

It is an amenable number.

51504512 is a deficient number, since it is larger than the sum of its proper divisors (51102388).

51504512 is an equidigital number, since it uses as much as digits as its factorization.

51504512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402393 (or 402381 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 51504512 is about 7176.6644062545. The cubic root of 51504512 is about 372.0618080519.

The spelling of 51504512 in words is "fifty-one million, five hundred four thousand, five hundred twelve".