52324781 has 4 divisors (see below), whose sum is σ = 52987200. Its totient is φ = 51662364.

The previous prime is 52324757. The next prime is 52324801. The reversal of 52324781 is 18742325.

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 a de Polignac number, because none of the positive numbers 2^k-52324781 is a prime.

It is a super-2 number, since 2×52324781² = 5475765413395922, 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 (52324711) 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, 331091 + ... + 331248.

It is an arithmetic number, because the mean of its divisors is an integer number (13246800).

Almost surely, 2^52324781 is an apocalyptic number.

It is an amenable number.

52324781 is a deficient number, since it is larger than the sum of its proper divisors (662419).

52324781 is an equidigital number, since it uses as much as digits as its factorization.

52324781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662418.

The product of its digits is 13440, while the sum is 32.

The square root of 52324781 is about 7233.5870078406. The cubic root of 52324781 is about 374.0265859450.

The spelling of 52324781 in words is "fifty-two million, three hundred twenty-four thousand, seven hundred eighty-one".