52660581 has 8 divisors (see below), whose sum is σ = 70269024. Its totient is φ = 35079600.

The previous prime is 52660561. The next prime is 52660589. The reversal of 52660581 is 18506625.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52660581 - 2⁷ = 52660453 is a prime.

It is a super-2 number, since 2×52660581² = 5546273582515122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52660589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1870 + ... + 10431.

It is an arithmetic number, because the mean of its divisors is an integer number (8783628).

Almost surely, 2^52660581 is an apocalyptic number.

It is an amenable number.

52660581 is a deficient number, since it is larger than the sum of its proper divisors (17608443).

52660581 is a wasteful number, since it uses less digits than its factorization.

52660581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13731.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 52660581 is about 7256.7610543548. The cubic root of 52660581 is about 374.8249992342.

The spelling of 52660581 in words is "fifty-two million, six hundred sixty thousand, five hundred eighty-one".