254843261 has 2 divisors, whose sum is σ = 254843262. Its totient is φ = 254843260.

The previous prime is 254843233. The next prime is 254843263. The reversal of 254843261 is 162348452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221087161 + 33756100 = 14869^2 + 5810^2 .

It is a cyclic number.

It is not a de Polignac number, because 254843261 - 2¹⁴ = 254826877 is a prime.

It is a super-2 number, since 2×254843261² = 129890175354228242, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 254843263, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254843263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127421630 + 127421631.

It is an arithmetic number, because the mean of its divisors is an integer number (127421631).

Almost surely, 2^254843261 is an apocalyptic number.

It is an amenable number.

254843261 is a deficient number, since it is larger than the sum of its proper divisors (1).

254843261 is an equidigital number, since it uses as much as digits as its factorization.

254843261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 35.

The square root of 254843261 is about 15963.8109798381. The cubic root of 254843261 is about 634.0026180204.

The spelling of 254843261 in words is "two hundred fifty-four million, eight hundred forty-three thousand, two hundred sixty-one".