51886520 has 32 divisors (see below), whose sum is σ = 133423200. Its totient is φ = 17789568.

The previous prime is 51886493. The next prime is 51886553. The reversal of 51886520 is 2568815.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92375 + ... + 92934.

It is an arithmetic number, because the mean of its divisors is an integer number (4169475).

Almost surely, 2^51886520 is an apocalyptic number.

It is an amenable number.

51886520 is an abundant number, since it is smaller than the sum of its proper divisors (81536680).

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

51886520 is a wasteful number, since it uses less digits than its factorization.

51886520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185327 (or 185323 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 51886520 is about 7203.2298311244. The cubic root of 51886520 is about 372.9794016709.

The spelling of 51886520 in words is "fifty-one million, eight hundred eighty-six thousand, five hundred twenty".