254533649 has 2 divisors, whose sum is σ = 254533650. Its totient is φ = 254533648.

The previous prime is 254533607. The next prime is 254533661. The reversal of 254533649 is 946335452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206439424 + 48094225 = 14368^2 + 6935^2 .

It is a cyclic number.

It is not a de Polignac number, because 254533649 - 2²⁴ = 237756433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (254533949) 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, 127266824 + 127266825.

It is an arithmetic number, because the mean of its divisors is an integer number (127266825).

Almost surely, 2^254533649 is an apocalyptic number.

It is an amenable number.

254533649 is a deficient number, since it is larger than the sum of its proper divisors (1).

254533649 is an equidigital number, since it uses as much as digits as its factorization.

254533649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 41.

The square root of 254533649 is about 15954.1107241990. The cubic root of 254533649 is about 633.7457616228.

The spelling of 254533649 in words is "two hundred fifty-four million, five hundred thirty-three thousand, six hundred forty-nine".