252555973 has 2 divisors, whose sum is σ = 252555974. Its totient is φ = 252555972.

The previous prime is 252555929. The next prime is 252555991. The reversal of 252555973 is 379555252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153214884 + 99341089 = 12378^2 + 9967^2 .

It is a cyclic number.

It is not a de Polignac number, because 252555973 - 2²¹ = 250458821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252555913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126277986 + 126277987.

It is an arithmetic number, because the mean of its divisors is an integer number (126277987).

Almost surely, 2^252555973 is an apocalyptic number.

It is an amenable number.

252555973 is a deficient number, since it is larger than the sum of its proper divisors (1).

252555973 is an equidigital number, since it uses as much as digits as its factorization.

252555973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 472500, while the sum is 43.

The square root of 252555973 is about 15892.0097218697. The cubic root of 252555973 is about 632.1001325147.

The spelling of 252555973 in words is "two hundred fifty-two million, five hundred fifty-five thousand, nine hundred seventy-three".