51988836 has 24 divisors (see below), whose sum is σ = 123297664. Its totient is φ = 17045280.

The previous prime is 51988831. The next prime is 51988837. The reversal of 51988836 is 63888915.

It is not an unprimeable number, because it can be changed into a prime (51988831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34780 + ... + 36243.

Almost surely, 2^51988836 is an apocalyptic number.

It is an amenable number.

51988836 is an abundant number, since it is smaller than the sum of its proper divisors (71308828).

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

51988836 is a wasteful number, since it uses less digits than its factorization.

51988836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71091 (or 71089 counting only the distinct ones).

The product of its digits is 414720, while the sum is 48.

The square root of 51988836 is about 7210.3284252522. The cubic root of 51988836 is about 373.2244023888.

The spelling of 51988836 in words is "fifty-one million, nine hundred eighty-eight thousand, eight hundred thirty-six".