51393552 has 60 divisors (see below), whose sum is σ = 154449936. Its totient is φ = 14683200.

The previous prime is 51393497. The next prime is 51393581. The reversal of 51393552 is 25539315.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8574 + ... + 13277.

Almost surely, 2^51393552 is an apocalyptic number.

It is an amenable number.

51393552 is an abundant number, since it is smaller than the sum of its proper divisors (103056384).

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

51393552 is a wasteful number, since it uses less digits than its factorization.

51393552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21876 (or 21863 counting only the distinct ones).

The product of its digits is 20250, while the sum is 33.

The square root of 51393552 is about 7168.9296272177. The cubic root of 51393552 is about 371.7944291422.

The spelling of 51393552 in words is "fifty-one million, three hundred ninety-three thousand, five hundred fifty-two".