50520981 has 32 divisors (see below), whose sum is σ = 81756160. Its totient is φ = 27107136.

The previous prime is 50520971. The next prime is 50520989. The reversal of 50520981 is 18902505.

It is not a de Polignac number, because 50520981 - 2⁹ = 50520469 is a prime.

It is a super-2 number, since 2×50520981² = 5104739042404722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50520989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50175 + ... + 51171.

It is an arithmetic number, because the mean of its divisors is an integer number (2554880).

Almost surely, 2^50520981 is an apocalyptic number.

It is an amenable number.

50520981 is a deficient number, since it is larger than the sum of its proper divisors (31235179).

50520981 is a wasteful number, since it uses less digits than its factorization.

50520981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 50520981 is about 7107.8112664870. The cubic root of 50520981 is about 369.6782715805.

The spelling of 50520981 in words is "fifty million, five hundred twenty thousand, nine hundred eighty-one".