51986792 has 64 divisors (see below), whose sum is σ = 118540800. Its totient is φ = 21047040.

The previous prime is 51986773. The next prime is 51986797. The reversal of 51986792 is 29768915.

It is not an unprimeable number, because it can be changed into a prime (51986797) 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, 32393 + ... + 33959.

It is an arithmetic number, because the mean of its divisors is an integer number (1852200).

Almost surely, 2^51986792 is an apocalyptic number.

51986792 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 51986792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59270400).

51986792 is an abundant number, since it is smaller than the sum of its proper divisors (66554008).

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

51986792 is a wasteful number, since it uses less digits than its factorization.

51986792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626 (or 1622 counting only the distinct ones).

The product of its digits is 272160, while the sum is 47.

The square root of 51986792 is about 7210.1866827427. The cubic root of 51986792 is about 373.2195110779.

The spelling of 51986792 in words is "fifty-one million, nine hundred eighty-six thousand, seven hundred ninety-two".