52294221 has 72 divisors (see below), whose sum is σ = 95322240. Its totient is φ = 28238112.

The previous prime is 52294219. The next prime is 52294271. The reversal of 52294221 is 12249225.

It is a happy number.

It is not a de Polignac number, because 52294221 - 2¹ = 52294219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52294201) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1112620 + ... + 1112666.

It is an arithmetic number, because the mean of its divisors is an integer number (1323920).

Almost surely, 2^52294221 is an apocalyptic number.

It is an amenable number.

52294221 is a deficient number, since it is larger than the sum of its proper divisors (43028019).

52294221 is a wasteful number, since it uses less digits than its factorization.

52294221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 86 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 52294221 is about 7231.4743310061. The cubic root of 52294221 is about 373.9537557090.

The spelling of 52294221 in words is "fifty-two million, two hundred ninety-four thousand, two hundred twenty-one".