254432561 has 2 divisors, whose sum is σ = 254432562. Its totient is φ = 254432560.

The previous prime is 254432551. The next prime is 254432579. The reversal of 254432561 is 165234452.

254432561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194463025 + 59969536 = 13945^2 + 7744^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254432561 is a prime.

It is not a weakly prime, because it can be changed into another prime (254432501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127216280 + 127216281.

It is an arithmetic number, because the mean of its divisors is an integer number (127216281).

Almost surely, 2^254432561 is an apocalyptic number.

It is an amenable number.

254432561 is a deficient number, since it is larger than the sum of its proper divisors (1).

254432561 is an equidigital number, since it uses as much as digits as its factorization.

254432561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 32.

The square root of 254432561 is about 15950.9423232610. The cubic root of 254432561 is about 633.6618531695.

The spelling of 254432561 in words is "two hundred fifty-four million, four hundred thirty-two thousand, five hundred sixty-one".