52393021 has 4 divisors (see below), whose sum is σ = 52427232. Its totient is φ = 52358812.

The previous prime is 52393001. The next prime is 52393087. The reversal of 52393021 is 12039325.

It is a happy number.

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 52393021 - 2¹⁷ = 52261949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52393001) 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, 14695 + ... + 17908.

It is an arithmetic number, because the mean of its divisors is an integer number (13106808).

Almost surely, 2^52393021 is an apocalyptic number.

It is an amenable number.

52393021 is a deficient number, since it is larger than the sum of its proper divisors (34211).

52393021 is a wasteful number, since it uses less digits than its factorization.

52393021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34210.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 52393021 is about 7238.3023562159. The cubic root of 52393021 is about 374.1891124200.

The spelling of 52393021 in words is "fifty-two million, three hundred ninety-three thousand, twenty-one".