51722384 has 40 divisors (see below), whose sum is σ = 118230528. Its totient is φ = 21450240.

The previous prime is 51722383. The next prime is 51722387. The reversal of 51722384 is 48322715.

It is a self number, because there is not a number n which added to its sum of digits gives 51722384.

It is not an unprimeable number, because it can be changed into a prime (51722383) 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, 3977 + ... + 10920.

Almost surely, 2^51722384 is an apocalyptic number.

It is an amenable number.

51722384 is an abundant number, since it is smaller than the sum of its proper divisors (66508144).

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

51722384 is a wasteful number, since it uses less digits than its factorization.

51722384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14943 (or 14937 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 51722384 is about 7191.8275841402. The cubic root of 51722384 is about 372.5856962422.

The spelling of 51722384 in words is "fifty-one million, seven hundred twenty-two thousand, three hundred eighty-four".