50998986 has 24 divisors (see below), whose sum is σ = 110653920. Its totient is φ = 16975656.

The previous prime is 50998979. The next prime is 50998991. The reversal of 50998986 is 68989905.

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, 15001 + ... + 18083.

It is an arithmetic number, because the mean of its divisors is an integer number (4610580).

Almost surely, 2^50998986 is an apocalyptic number.

50998986 is an abundant number, since it is smaller than the sum of its proper divisors (59654934).

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

50998986 is a wasteful number, since it uses less digits than its factorization.

50998986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010 (or 4007 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The square root of 50998986 is about 7141.3574339897. The cubic root of 50998986 is about 370.8405191667.

It can be divided in two parts, 50998 and 986, that added together give a square (51984 = 228²).

The spelling of 50998986 in words is "fifty million, nine hundred ninety-eight thousand, nine hundred eighty-six".