52529581 has 4 divisors (see below), whose sum is σ = 56570332. Its totient is φ = 48488832.

The previous prime is 52529579. The next prime is 52529627. The reversal of 52529581 is 18592525.

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 26936100 + 25593481 = 5190^2 + 5059^2 .

It is a cyclic number.

It is not a de Polignac number, because 52529581 - 2¹ = 52529579 is a prime.

It is a super-2 number, since 2×52529581² = 5518713760071122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 52529581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52529681) 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, 2020356 + ... + 2020381.

It is an arithmetic number, because the mean of its divisors is an integer number (14142583).

Almost surely, 2^52529581 is an apocalyptic number.

It is an amenable number.

52529581 is a deficient number, since it is larger than the sum of its proper divisors (4040751).

52529581 is a wasteful number, since it uses less digits than its factorization.

52529581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040750.

The product of its digits is 36000, while the sum is 37.

The square root of 52529581 is about 7247.7293685678. The cubic root of 52529581 is about 374.5139326119.

The spelling of 52529581 in words is "fifty-two million, five hundred twenty-nine thousand, five hundred eighty-one".