51922992 has 80 divisors (see below), whose sum is σ = 151418880. Its totient is φ = 15187200.

The previous prime is 51922979. The next prime is 51922993. The reversal of 51922992 is 29922915.

It is a self number, because there is not a number n which added to its sum of digits gives 51922992.

It is not an unprimeable number, because it can be changed into a prime (51922993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13617 + ... + 17007.

It is an arithmetic number, because the mean of its divisors is an integer number (1892736).

Almost surely, 2^51922992 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 51922992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75709440).

51922992 is an abundant number, since it is smaller than the sum of its proper divisors (99495888).

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

51922992 is a wasteful number, since it uses less digits than its factorization.

51922992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3442 (or 3436 counting only the distinct ones).

The product of its digits is 29160, while the sum is 39.

The square root of 51922992 is about 7205.7610285105. The cubic root of 51922992 is about 373.0667725889.

The spelling of 51922992 in words is "fifty-one million, nine hundred twenty-two thousand, nine hundred ninety-two".