51423672 has 32 divisors (see below), whose sum is σ = 129139200. Its totient is φ = 17063904.

The previous prime is 51423661. The next prime is 51423703. The reversal of 51423672 is 27632415.

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 729 + ... + 10167.

It is an arithmetic number, because the mean of its divisors is an integer number (4035600).

Almost surely, 2^51423672 is an apocalyptic number.

It is an amenable number.

51423672 is an abundant number, since it is smaller than the sum of its proper divisors (77715528).

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

51423672 is a wasteful number, since it uses less digits than its factorization.

51423672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9675 (or 9671 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 51423672 is about 7171.0300515337. The cubic root of 51423672 is about 371.8670469499.

The spelling of 51423672 in words is "fifty-one million, four hundred twenty-three thousand, six hundred seventy-two".