254055661 has 2 divisors, whose sum is σ = 254055662. Its totient is φ = 254055660.

The previous prime is 254055623. The next prime is 254055691. The reversal of 254055661 is 166550452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128391561 + 125664100 = 11331^2 + 11210^2 .

It is a cyclic number.

It is not a de Polignac number, because 254055661 - 2¹⁵ = 254022893 is a prime.

It is a super-2 number, since 2×254055661² = 129088557772293842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254055611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127027830 + 127027831.

It is an arithmetic number, because the mean of its divisors is an integer number (127027831).

Almost surely, 2^254055661 is an apocalyptic number.

It is an amenable number.

254055661 is a deficient number, since it is larger than the sum of its proper divisors (1).

254055661 is an equidigital number, since it uses as much as digits as its factorization.

254055661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 254055661 is about 15939.1235957314. The cubic root of 254055661 is about 633.3488099327.

The spelling of 254055661 in words is "two hundred fifty-four million, fifty-five thousand, six hundred sixty-one".