51877998 has 12 divisors (see below), whose sum is σ = 112402368. Its totient is φ = 17292660.

The previous prime is 51877979. The next prime is 51878003. The reversal of 51877998 is 89977815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1441038 + ... + 1441073.

It is an arithmetic number, because the mean of its divisors is an integer number (9366864).

Almost surely, 2^51877998 is an apocalyptic number.

51877998 is an abundant number, since it is smaller than the sum of its proper divisors (60524370).

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

51877998 is a wasteful number, since it uses less digits than its factorization.

51877998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2882119 (or 2882116 counting only the distinct ones).

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

The square root of 51877998 is about 7202.6382666354. The cubic root of 51877998 is about 372.9589807954.

The spelling of 51877998 in words is "fifty-one million, eight hundred seventy-seven thousand, nine hundred ninety-eight".