50572981 has 2 divisors, whose sum is σ = 50572982. Its totient is φ = 50572980.

The previous prime is 50572961. The next prime is 50572993. The reversal of 50572981 is 18927505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40068900 + 10504081 = 6330^2 + 3241^2 .

It is a cyclic number.

It is not a de Polignac number, because 50572981 - 2¹⁵ = 50540213 is a prime.

It is a super-2 number, since 2×50572981² = 5115252814452722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50572981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50572901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25286490 + 25286491.

It is an arithmetic number, because the mean of its divisors is an integer number (25286491).

Almost surely, 2^50572981 is an apocalyptic number.

It is an amenable number.

50572981 is a deficient number, since it is larger than the sum of its proper divisors (1).

50572981 is an equidigital number, since it uses as much as digits as its factorization.

50572981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 50572981 is about 7111.4682731487. The cubic root of 50572981 is about 369.8050616663.

It can be divided in two parts, 505 and 72981, that multiplied together give a triangular number (36855405 = T₈₅₈₅).

The spelling of 50572981 in words is "fifty million, five hundred seventy-two thousand, nine hundred eighty-one".