53152581 has 4 divisors (see below), whose sum is σ = 70870112. Its totient is φ = 35435052.

The previous prime is 53152579. The next prime is 53152613. The reversal of 53152581 is 18525135.

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 not a de Polignac number, because 53152581 - 2¹ = 53152579 is a prime.

It is a super-2 number, since 2×53152581² = 5650393733923122, 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 (53152531) 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, 8858761 + ... + 8858766.

It is an arithmetic number, because the mean of its divisors is an integer number (17717528).

Almost surely, 2^53152581 is an apocalyptic number.

It is an amenable number.

53152581 is a deficient number, since it is larger than the sum of its proper divisors (17717531).

53152581 is a wasteful number, since it uses less digits than its factorization.

53152581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17717530.

The product of its digits is 6000, while the sum is 30.

The square root of 53152581 is about 7290.5816640375. The cubic root of 53152581 is about 375.9886941108.

The spelling of 53152581 in words is "fifty-three million, one hundred fifty-two thousand, five hundred eighty-one".