51900992 has 112 divisors (see below), whose sum is σ = 124431552. Its totient is φ = 21166080.

The previous prime is 51900977. The next prime is 51900997. The reversal of 51900992 is 29900915.

It is not an unprimeable number, because it can be changed into a prime (51900997) 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, 485003 + ... + 485109.

It is an arithmetic number, because the mean of its divisors is an integer number (1110996).

Almost surely, 2^51900992 is an apocalyptic number.

51900992 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51900992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62215776).

51900992 is an abundant number, since it is smaller than the sum of its proper divisors (72530560).

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

51900992 is a wasteful number, since it uses less digits than its factorization.

51900992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 51900992 is about 7204.2343104594. The cubic root of 51900992 is about 373.0140751349.

The spelling of 51900992 in words is "fifty-one million, nine hundred thousand, nine hundred ninety-two".