253171049 has 2 divisors, whose sum is σ = 253171050. Its totient is φ = 253171048.

The previous prime is 253171007. The next prime is 253171069. The reversal of 253171049 is 940171352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183331600 + 69839449 = 13540^2 + 8357^2 .

It is a cyclic number.

It is not a de Polignac number, because 253171049 - 2⁸ = 253170793 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (253171069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126585524 + 126585525.

It is an arithmetic number, because the mean of its divisors is an integer number (126585525).

Almost surely, 2^253171049 is an apocalyptic number.

It is an amenable number.

253171049 is a deficient number, since it is larger than the sum of its proper divisors (1).

253171049 is an equidigital number, since it uses as much as digits as its factorization.

253171049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 253171049 is about 15911.3496913367. The cubic root of 253171049 is about 632.6128563845.

The spelling of 253171049 in words is "two hundred fifty-three million, one hundred seventy-one thousand, forty-nine".