51429392 has 40 divisors (see below), whose sum is σ = 114671232. Its totient is φ = 21888000.

The previous prime is 51429379. The next prime is 51429397. The reversal of 51429392 is 29392415.

It is a super-2 number, since 2×51429392² = 5289964722979328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51429397) 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, 15392 + ... + 18432.

Almost surely, 2^51429392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51429392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57335616).

51429392 is an abundant number, since it is smaller than the sum of its proper divisors (63241840).

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

51429392 is a wasteful number, since it uses less digits than its factorization.

51429392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3207 (or 3201 counting only the distinct ones).

The product of its digits is 19440, while the sum is 35.

The square root of 51429392 is about 7171.4288673876. The cubic root of 51429392 is about 371.8808343787.

The spelling of 51429392 in words is "fifty-one million, four hundred twenty-nine thousand, three hundred ninety-two".