51389352 has 48 divisors (see below), whose sum is σ = 159063840. Its totient is φ = 14682528.

The previous prime is 51389347. The next prime is 51389369. The reversal of 51389352 is 25398315.

51389352 is a `hidden beast` number, since 513 + 8 + 93 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50478 + ... + 51485.

It is an arithmetic number, because the mean of its divisors is an integer number (3313830).

Almost surely, 2^51389352 is an apocalyptic number.

It is an amenable number.

51389352 is an abundant number, since it is smaller than the sum of its proper divisors (107674488).

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

51389352 is a wasteful number, since it uses less digits than its factorization.

51389352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101982 (or 101975 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 51389352 is about 7168.6366904733. The cubic root of 51389352 is about 371.7843008992.

It can be divided in two parts, 51 and 389352, that added together give a triangular number (389403 = T₈₈₂).

The spelling of 51389352 in words is "fifty-one million, three hundred eighty-nine thousand, three hundred fifty-two".