51800892 has 48 divisors (see below), whose sum is σ = 142004352. Its totient is φ = 14489280.

The previous prime is 51800869. The next prime is 51800923. The reversal of 51800892 is 29800815.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13378 + ... + 16809.

It is an arithmetic number, because the mean of its divisors is an integer number (2958424).

Almost surely, 2^51800892 is an apocalyptic number.

51800892 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51800892 is an abundant number, since it is smaller than the sum of its proper divisors (90203460).

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

51800892 is a wasteful number, since it uses less digits than its factorization.

51800892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30218 (or 30216 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 51800892 is about 7197.2836542685. The cubic root of 51800892 is about 372.7741135083.

The spelling of 51800892 in words is "fifty-one million, eight hundred thousand, eight hundred ninety-two".