252837221 has 16 divisors (see below), whose sum is σ = 311942400. Its totient is φ = 199559808.

The previous prime is 252837157. The next prime is 252837223. The reversal of 252837221 is 122738252.

It is not a de Polignac number, because 252837221 - 2⁶ = 252837157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252837223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36785 + ... + 43113.

It is an arithmetic number, because the mean of its divisors is an integer number (19496400).

Almost surely, 2^252837221 is an apocalyptic number.

It is an amenable number.

252837221 is a deficient number, since it is larger than the sum of its proper divisors (59105179).

252837221 is a wasteful number, since it uses less digits than its factorization.

252837221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6788.

The product of its digits is 13440, while the sum is 32.

The square root of 252837221 is about 15900.8559832482. The cubic root of 252837221 is about 632.3346824320.

The spelling of 252837221 in words is "two hundred fifty-two million, eight hundred thirty-seven thousand, two hundred twenty-one".