50535581 has 2 divisors, whose sum is σ = 50535582. Its totient is φ = 50535580.

The previous prime is 50535571. The next prime is 50535619. The reversal of 50535581 is 18553505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44488900 + 6046681 = 6670^2 + 2459^2 .

It is a cyclic number.

It is not a de Polignac number, because 50535581 - 2¹⁴ = 50519197 is a prime.

It is a super-2 number, since 2×50535581² = 5107689894015122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50535571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25267790 + 25267791.

It is an arithmetic number, because the mean of its divisors is an integer number (25267791).

Almost surely, 2^50535581 is an apocalyptic number.

It is an amenable number.

50535581 is a deficient number, since it is larger than the sum of its proper divisors (1).

50535581 is an equidigital number, since it uses as much as digits as its factorization.

50535581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15000, while the sum is 32.

The square root of 50535581 is about 7108.8382313849. The cubic root of 50535581 is about 369.7138791164.

The spelling of 50535581 in words is "fifty million, five hundred thirty-five thousand, five hundred eighty-one".