51998877 has 24 divisors (see below), whose sum is σ = 90359360. Its totient is φ = 28149120.

The previous prime is 51998809. The next prime is 51998939. The reversal of 51998877 is 77889915.

51998877 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51998877 - 2⁸ = 51998621 is a prime.

It is a super-2 number, since 2×51998877² = 5407766418522258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51998477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20524 + ... + 22917.

Almost surely, 2^51998877 is an apocalyptic number.

51998877 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

51998877 is a deficient number, since it is larger than the sum of its proper divisors (38360483).

51998877 is a wasteful number, since it uses less digits than its factorization.

51998877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43473 (or 43470 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 54.

The square root of 51998877 is about 7211.0246844675. The cubic root of 51998877 is about 373.2484287329.

The spelling of 51998877 in words is "fifty-one million, nine hundred ninety-eight thousand, eight hundred seventy-seven".