51503512 has 16 divisors (see below), whose sum is σ = 96711840. Its totient is φ = 25713696.

The previous prime is 51503477. The next prime is 51503513. The reversal of 51503512 is 21530515.

It is a super-2 number, since 2×51503512² = 5305223496668288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51503513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1473 + ... + 10255.

It is an arithmetic number, because the mean of its divisors is an integer number (6044490).

Almost surely, 2^51503512 is an apocalyptic number.

It is an amenable number.

51503512 is a deficient number, since it is larger than the sum of its proper divisors (45208328).

51503512 is a wasteful number, since it uses less digits than its factorization.

51503512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9522 (or 9518 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 51503512 is about 7176.5947356668. The cubic root of 51503512 is about 372.0594000803.

The spelling of 51503512 in words is "fifty-one million, five hundred three thousand, five hundred twelve".