52038721 has 4 divisors (see below), whose sum is σ = 59472832. Its totient is φ = 44604612.

The previous prime is 52038713. The next prime is 52038733. The reversal of 52038721 is 12783025.

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 52038721 - 2³ = 52038713 is a prime.

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 52038721.

It is not an unprimeable number, because it can be changed into a prime (52038781) 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, 3717045 + ... + 3717058.

It is an arithmetic number, because the mean of its divisors is an integer number (14868208).

Almost surely, 2^52038721 is an apocalyptic number.

It is an amenable number.

52038721 is a deficient number, since it is larger than the sum of its proper divisors (7434111).

52038721 is an equidigital number, since it uses as much as digits as its factorization.

52038721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7434110.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 52038721 is about 7213.7868695991. The cubic root of 52038721 is about 373.3437379293.

It can be divided in two parts, 5203 and 8721, that added together give a square (13924 = 118²).

The spelling of 52038721 in words is "fifty-two million, thirty-eight thousand, seven hundred twenty-one".