52228121 has 4 divisors (see below), whose sum is σ = 56976144. Its totient is φ = 47480100.

The previous prime is 52228109. The next prime is 52228123. The reversal of 52228121 is 12182225.

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-52228121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52228123) 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, 2373995 + ... + 2374016.

It is an arithmetic number, because the mean of its divisors is an integer number (14244036).

Almost surely, 2^52228121 is an apocalyptic number.

It is an amenable number.

52228121 is a deficient number, since it is larger than the sum of its proper divisors (4748023).

52228121 is a wasteful number, since it uses less digits than its factorization.

52228121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4748022.

The product of its digits is 640, while the sum is 23.

The square root of 52228121 is about 7226.9025868625. The cubic root of 52228121 is about 373.7961298453.

The spelling of 52228121 in words is "fifty-two million, two hundred twenty-eight thousand, one hundred twenty-one".