254321663 has 2 divisors, whose sum is σ = 254321664. Its totient is φ = 254321662.

The previous prime is 254321567. The next prime is 254321671. The reversal of 254321663 is 366123452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 254321663 - 2¹⁶ = 254256127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254327663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127160831 + 127160832.

It is an arithmetic number, because the mean of its divisors is an integer number (127160832).

Almost surely, 2^254321663 is an apocalyptic number.

254321663 is a deficient number, since it is larger than the sum of its proper divisors (1).

254321663 is an equidigital number, since it uses as much as digits as its factorization.

254321663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 32.

The square root of 254321663 is about 15947.4657234308. The cubic root of 254321663 is about 633.5697763220.

The spelling of 254321663 in words is "two hundred fifty-four million, three hundred twenty-one thousand, six hundred sixty-three".