51696504 has 24 divisors (see below), whose sum is σ = 140011560. Its totient is φ = 17232144.

The previous prime is 51696481. The next prime is 51696509. The reversal of 51696504 is 40569615.

51696504 is a `hidden beast` number, since 516 + 96 + 50 + 4 = 666.

51696504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51696509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 358932 + ... + 359075.

It is an arithmetic number, because the mean of its divisors is an integer number (5833815).

Almost surely, 2^51696504 is an apocalyptic number.

It is an amenable number.

51696504 is an abundant number, since it is smaller than the sum of its proper divisors (88315056).

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

51696504 is a wasteful number, since it uses less digits than its factorization.

51696504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718019 (or 718012 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 51696504 is about 7190.0280945209. The cubic root of 51696504 is about 372.5235430971.

It can be divided in two parts, 516 and 96504, that added together give a triangular number (97020 = T₄₄₀).

The spelling of 51696504 in words is "fifty-one million, six hundred ninety-six thousand, five hundred four".