52423581 has 24 divisors (see below), whose sum is σ = 82244160. Its totient is φ = 29612352.

The previous prime is 52423523. The next prime is 52423621. The reversal of 52423581 is 18532425.

It is not a de Polignac number, because 52423581 - 2⁶ = 52423517 is a prime.

It is a super-2 number, since 2×52423581² = 5496463689727122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52423781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11080 + ... + 15086.

It is an arithmetic number, because the mean of its divisors is an integer number (3426840).

Almost surely, 2^52423581 is an apocalyptic number.

It is an amenable number.

52423581 is a deficient number, since it is larger than the sum of its proper divisors (29820579).

52423581 is a wasteful number, since it uses less digits than its factorization.

52423581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4113 (or 4106 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 52423581 is about 7240.4130407042. The cubic root of 52423581 is about 374.2618510943.

The spelling of 52423581 in words is "fifty-two million, four hundred twenty-three thousand, five hundred eighty-one".