252221839 has 2 divisors, whose sum is σ = 252221840. Its totient is φ = 252221838.

The previous prime is 252221833. The next prime is 252221863. The reversal of 252221839 is 938122252.

252221839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 252221839 - 2⁵ = 252221807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252221833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126110919 + 126110920.

It is an arithmetic number, because the mean of its divisors is an integer number (126110920).

Almost surely, 2^252221839 is an apocalyptic number.

252221839 is a deficient number, since it is larger than the sum of its proper divisors (1).

252221839 is an equidigital number, since it uses as much as digits as its factorization.

252221839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The square root of 252221839 is about 15881.4936010440. The cubic root of 252221839 is about 631.8212512905.

The spelling of 252221839 in words is "two hundred fifty-two million, two hundred twenty-one thousand, eight hundred thirty-nine".