50724581 has 4 divisors (see below), whose sum is σ = 50741472. Its totient is φ = 50707692.

The previous prime is 50724577. The next prime is 50724593. The reversal of 50724581 is 18542705.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50724581 - 2² = 50724577 is a prime.

It is a super-2 number, since 2×50724581² = 5145966235251122, 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 (50724781) 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, 2585 + ... + 10398.

It is an arithmetic number, because the mean of its divisors is an integer number (12685368).

Almost surely, 2^50724581 is an apocalyptic number.

It is an amenable number.

50724581 is a deficient number, since it is larger than the sum of its proper divisors (16891).

50724581 is a wasteful number, since it uses less digits than its factorization.

50724581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16890.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 50724581 is about 7122.1191368862. The cubic root of 50724581 is about 370.1742082003.

The spelling of 50724581 in words is "fifty million, seven hundred twenty-four thousand, five hundred eighty-one".