50970581 has 4 divisors (see below), whose sum is σ = 51082572. Its totient is φ = 50858592.

The previous prime is 50970551. The next prime is 50970583. The reversal of 50970581 is 18507905.

50970581 = T₂₂₅ + T₂₂₆ + ... + T₆₈₁.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19722481 + 31248100 = 4441^2 + 5590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50970581 is a prime.

It is a super-2 number, since 2×50970581² = 5196000254955122, 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 (50970583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55310 + ... + 56223.

It is an arithmetic number, because the mean of its divisors is an integer number (12770643).

Almost surely, 2^50970581 is an apocalyptic number.

It is an amenable number.

50970581 is a deficient number, since it is larger than the sum of its proper divisors (111991).

50970581 is a wasteful number, since it uses less digits than its factorization.

50970581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111990.

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 50970581 is about 7139.3683894305. The cubic root of 50970581 is about 370.7716571360.

The spelling of 50970581 in words is "fifty million, nine hundred seventy thousand, five hundred eighty-one".