51338892 has 24 divisors (see below), whose sum is σ = 130681152. Its totient is φ = 15557200.

The previous prime is 51338887. The next prime is 51338897. The reversal of 51338892 is 29883315.

It is an interprime number because it is at equal distance from previous prime (51338887) and next prime (51338897).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 51338892.

It is not an unprimeable number, because it can be changed into a prime (51338897) 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, 194334 + ... + 194597.

It is an arithmetic number, because the mean of its divisors is an integer number (5445048).

Almost surely, 2^51338892 is an apocalyptic number.

It is an amenable number.

51338892 is an abundant number, since it is smaller than the sum of its proper divisors (79342260).

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

51338892 is a wasteful number, since it uses less digits than its factorization.

51338892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388949 (or 388947 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 51338892 is about 7165.1163284346. The cubic root of 51338892 is about 371.6625741292.

The spelling of 51338892 in words is "fifty-one million, three hundred thirty-eight thousand, eight hundred ninety-two".