51912988 has 12 divisors (see below), whose sum is σ = 91869120. Its totient is φ = 25664672.

The previous prime is 51912977. The next prime is 51912989. The reversal of 51912988 is 88921915.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51912989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72556 + ... + 73267.

It is an arithmetic number, because the mean of its divisors is an integer number (7655760).

Almost surely, 2^51912988 is an apocalyptic number.

It is an amenable number.

51912988 is a deficient number, since it is larger than the sum of its proper divisors (39956132).

51912988 is a wasteful number, since it uses less digits than its factorization.

51912988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145916 (or 145914 counting only the distinct ones).

The product of its digits is 51840, while the sum is 43.

The square root of 51912988 is about 7205.0668282813. The cubic root of 51912988 is about 373.0428114651.

It can be divided in two parts, 51912 and 988, that added together give a square (52900 = 230²).

The spelling of 51912988 in words is "fifty-one million, nine hundred twelve thousand, nine hundred eighty-eight".