52558381 has 4 divisors (see below), whose sum is σ = 54843552. Its totient is φ = 50273212.

The previous prime is 52558357. The next prime is 52558399. The reversal of 52558381 is 18385525.

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 a cyclic number.

It is not a de Polignac number, because 52558381 - 2⁵ = 52558349 is a prime.

It is a super-2 number, since 2×52558381² = 5524766826682322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52558381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52558301) 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, 1142551 + ... + 1142596.

It is an arithmetic number, because the mean of its divisors is an integer number (13710888).

Almost surely, 2^52558381 is an apocalyptic number.

It is an amenable number.

52558381 is a deficient number, since it is larger than the sum of its proper divisors (2285171).

52558381 is a wasteful number, since it uses less digits than its factorization.

52558381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285170.

The product of its digits is 48000, while the sum is 37.

The square root of 52558381 is about 7249.7159254691. The cubic root of 52558381 is about 374.5823640904.

The spelling of 52558381 in words is "fifty-two million, five hundred fifty-eight thousand, three hundred eighty-one".