50986521 has 12 divisors (see below), whose sum is σ = 74580480. Its totient is φ = 33560280.

The previous prime is 50986483. The next prime is 50986549. The reversal of 50986521 is 12568905.

It is a happy number.

50986521 is a `hidden beast` number, since 50 + 9 + 86 + 521 = 666.

It is not a de Polignac number, because 50986521 - 2⁷ = 50986393 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (50986571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35145 + ... + 36566.

It is an arithmetic number, because the mean of its divisors is an integer number (6215040).

Almost surely, 2^50986521 is an apocalyptic number.

It is an amenable number.

50986521 is a deficient number, since it is larger than the sum of its proper divisors (23593959).

50986521 is a wasteful number, since it uses less digits than its factorization.

50986521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71796 (or 71793 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 50986521 is about 7140.4846474171. The cubic root of 50986521 is about 370.8103035089.

The spelling of 50986521 in words is "fifty million, nine hundred eighty-six thousand, five hundred twenty-one".