52802621 has 4 divisors (see below), whose sum is σ = 52868700. Its totient is φ = 52736544.

The previous prime is 52802611. The next prime is 52802623. The reversal of 52802621 is 12620825.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28408900 + 24393721 = 5330^2 + 4939^2 .

It is a cyclic number.

It is not a de Polignac number, because 52802621 - 2¹⁰ = 52801597 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 (52802623) 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, 31826 + ... + 33443.

It is an arithmetic number, because the mean of its divisors is an integer number (13217175).

Almost surely, 2^52802621 is an apocalyptic number.

It is an amenable number.

52802621 is a deficient number, since it is larger than the sum of its proper divisors (66079).

52802621 is an equidigital number, since it uses as much as digits as its factorization.

52802621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66078.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 52802621 is about 7266.5411992226. The cubic root of 52802621 is about 375.1616985625.

The spelling of 52802621 in words is "fifty-two million, eight hundred two thousand, six hundred twenty-one".