254252161 has 2 divisors, whose sum is σ = 254252162. Its totient is φ = 254252160.

The previous prime is 254252149. The next prime is 254252177. The reversal of 254252161 is 161252452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183439936 + 70812225 = 13544^2 + 8415^2 .

It is a cyclic number.

It is not a de Polignac number, because 254252161 - 2⁹ = 254251649 is a prime.

It is a super-2 number, since 2×254252161² = 129288322746339842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (254252461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127126080 + 127126081.

It is an arithmetic number, because the mean of its divisors is an integer number (127126081).

Almost surely, 2^254252161 is an apocalyptic number.

It is an amenable number.

254252161 is a deficient number, since it is larger than the sum of its proper divisors (1).

254252161 is an equidigital number, since it uses as much as digits as its factorization.

254252161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 28.

The square root of 254252161 is about 15945.2864822179. The cubic root of 254252161 is about 633.5120562705.

The spelling of 254252161 in words is "two hundred fifty-four million, two hundred fifty-two thousand, one hundred sixty-one".