52534721 has 4 divisors (see below), whose sum is σ = 53425200. Its totient is φ = 51644244.

The previous prime is 52534711. The next prime is 52534733. The reversal of 52534721 is 12743525.

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 52534721 - 2¹⁰ = 52533697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52534711) 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, 445151 + ... + 445268.

It is an arithmetic number, because the mean of its divisors is an integer number (13356300).

Almost surely, 2^52534721 is an apocalyptic number.

It is an amenable number.

52534721 is a deficient number, since it is larger than the sum of its proper divisors (890479).

52534721 is an equidigital number, since it uses as much as digits as its factorization.

52534721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890478.

The product of its digits is 8400, while the sum is 29.

The square root of 52534721 is about 7248.0839537080. The cubic root of 52534721 is about 374.5261475633.

The spelling of 52534721 in words is "fifty-two million, five hundred thirty-four thousand, seven hundred twenty-one".