51392472 has 32 divisors (see below), whose sum is σ = 128839680. Its totient is φ = 17083040.

The previous prime is 51392461. The next prime is 51392477. The reversal of 51392472 is 27429315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51392477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6397 + ... + 11987.

It is an arithmetic number, because the mean of its divisors is an integer number (4026240).

Almost surely, 2^51392472 is an apocalyptic number.

It is an amenable number.

51392472 is an abundant number, since it is smaller than the sum of its proper divisors (77447208).

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

51392472 is a wasteful number, since it uses less digits than its factorization.

51392472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5983 (or 5979 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 51392472 is about 7168.8543017696. The cubic root of 51392472 is about 371.7918247895.

The spelling of 51392472 in words is "fifty-one million, three hundred ninety-two thousand, four hundred seventy-two".