495455251 has 2 divisors, whose sum is σ = 495455252. Its totient is φ = 495455250.

The previous prime is 495455243. The next prime is 495455269. The reversal of 495455251 is 152554594.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 495455251 - 2³ = 495455243 is a prime.

It is not a weakly prime, because it can be changed into another prime (495455281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247727625 + 247727626.

It is an arithmetic number, because the mean of its divisors is an integer number (247727626).

Almost surely, 2^495455251 is an apocalyptic number.

495455251 is a deficient number, since it is larger than the sum of its proper divisors (1).

495455251 is an equidigital number, since it uses as much as digits as its factorization.

495455251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180000, while the sum is 40.

The square root of 495455251 is about 22258.8241153930. The cubic root of 495455251 is about 791.2884231055.

The spelling of 495455251 in words is "four hundred ninety-five million, four hundred fifty-five thousand, two hundred fifty-one".