254565121 has 2 divisors, whose sum is σ = 254565122. Its totient is φ = 254565120.

The previous prime is 254565119. The next prime is 254565131. The reversal of 254565121 is 121565452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244484496 + 10080625 = 15636^2 + 3175^2 .

It is a cyclic number.

It is not a de Polignac number, because 254565121 - 2¹ = 254565119 is a prime.

Together with 254565119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (254565131) 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, 127282560 + 127282561.

It is an arithmetic number, because the mean of its divisors is an integer number (127282561).

Almost surely, 2^254565121 is an apocalyptic number.

It is an amenable number.

254565121 is a deficient number, since it is larger than the sum of its proper divisors (1).

254565121 is an equidigital number, since it uses as much as digits as its factorization.

254565121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12000, while the sum is 31.

The square root of 254565121 is about 15955.0970225818. The cubic root of 254565121 is about 633.7718805331.

The spelling of 254565121 in words is "two hundred fifty-four million, five hundred sixty-five thousand, one hundred twenty-one".