50687990 has 16 divisors (see below), whose sum is σ = 91590048. Its totient is φ = 20197056.

The previous prime is 50687977. The next prime is 50687993. The reversal of 50687990 is 9978605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50687993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7007 + ... + 12266.

It is an arithmetic number, because the mean of its divisors is an integer number (5724378).

Almost surely, 2^50687990 is an apocalyptic number.

50687990 is a deficient number, since it is larger than the sum of its proper divisors (40902058).

50687990 is a wasteful number, since it uses less digits than its factorization.

50687990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19543.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 50687990 is about 7119.5498453203. The cubic root of 50687990 is about 370.0851763972.

The spelling of 50687990 in words is "fifty million, six hundred eighty-seven thousand, nine hundred ninety".