252770321 has 2 divisors, whose sum is σ = 252770322. Its totient is φ = 252770320.

The previous prime is 252770279. The next prime is 252770327. The reversal of 252770321 is 123077252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235960321 + 16810000 = 15361^2 + 4100^2 .

It is a cyclic number.

It is not a de Polignac number, because 252770321 - 2⁶ = 252770257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (252770327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126385160 + 126385161.

It is an arithmetic number, because the mean of its divisors is an integer number (126385161).

Almost surely, 2^252770321 is an apocalyptic number.

It is an amenable number.

252770321 is a deficient number, since it is larger than the sum of its proper divisors (1).

252770321 is an equidigital number, since it uses as much as digits as its factorization.

252770321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 252770321 is about 15898.7521837407. The cubic root of 252770321 is about 632.2789062008.

The spelling of 252770321 in words is "two hundred fifty-two million, seven hundred seventy thousand, three hundred twenty-one".