52265821 has 4 divisors (see below), whose sum is σ = 54538272. Its totient is φ = 49993372.

The previous prime is 52265819. The next prime is 52265839. The reversal of 52265821 is 12856225.

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 52265821 - 2¹ = 52265819 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52265321) 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, 1136191 + ... + 1136236.

It is an arithmetic number, because the mean of its divisors is an integer number (13634568).

Almost surely, 2^52265821 is an apocalyptic number.

It is an amenable number.

52265821 is a deficient number, since it is larger than the sum of its proper divisors (2272451).

52265821 is a wasteful number, since it uses less digits than its factorization.

52265821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2272450.

The product of its digits is 9600, while the sum is 31.

The square root of 52265821 is about 7229.5104260247. The cubic root of 52265821 is about 373.8860477189.

The spelling of 52265821 in words is "fifty-two million, two hundred sixty-five thousand, eight hundred twenty-one".