51447392 has 24 divisors (see below), whose sum is σ = 104781600. Its totient is φ = 24836224.

The previous prime is 51447391. The next prime is 51447437. The reversal of 51447392 is 29374415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51447391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26792 + ... + 28647.

It is an arithmetic number, because the mean of its divisors is an integer number (4365900).

Almost surely, 2^51447392 is an apocalyptic number.

It is an amenable number.

51447392 is an abundant number, since it is smaller than the sum of its proper divisors (53334208).

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

51447392 is a wasteful number, since it uses less digits than its factorization.

51447392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55478 (or 55470 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 51447392 is about 7172.6837376257. The cubic root of 51447392 is about 371.9242147233.

The spelling of 51447392 in words is "fifty-one million, four hundred forty-seven thousand, three hundred ninety-two".