252820387 has 2 divisors, whose sum is σ = 252820388. Its totient is φ = 252820386.

The previous prime is 252820367. The next prime is 252820453. The reversal of 252820387 is 783028252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 252820387 - 2²³ = 244431779 is a prime.

It is not a weakly prime, because it can be changed into another prime (252820307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126410193 + 126410194.

It is an arithmetic number, because the mean of its divisors is an integer number (126410194).

Almost surely, 2^252820387 is an apocalyptic number.

252820387 is a deficient number, since it is larger than the sum of its proper divisors (1).

252820387 is an equidigital number, since it uses as much as digits as its factorization.

252820387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 252820387 is about 15900.3266318651. The cubic root of 252820387 is about 632.3206484246.

The spelling of 252820387 in words is "two hundred fifty-two million, eight hundred twenty thousand, three hundred eighty-seven".