52490581 has 16 divisors (see below), whose sum is σ = 61871040. Its totient is φ = 43902720.

The previous prime is 52490569. The next prime is 52490593. The reversal of 52490581 is 18509425.

It is an interprime number because it is at equal distance from previous prime (52490569) and next prime (52490593).

It is a cyclic number.

It is not a de Polignac number, because 52490581 - 2⁵ = 52490549 is a prime.

It is a super-2 number, since 2×52490581² = 5510522187435122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52490381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84490 + ... + 85108.

It is an arithmetic number, because the mean of its divisors is an integer number (3866940).

Almost surely, 2^52490581 is an apocalyptic number.

It is an amenable number.

52490581 is a deficient number, since it is larger than the sum of its proper divisors (9380459).

52490581 is a wasteful number, since it uses less digits than its factorization.

52490581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 52490581 is about 7245.0383711889. The cubic root of 52490581 is about 374.4212251045.

The spelling of 52490581 in words is "fifty-two million, four hundred ninety thousand, five hundred eighty-one".