495887281 has 2 divisors, whose sum is σ = 495887282. Its totient is φ = 495887280.

The previous prime is 495887267. The next prime is 495887303. The reversal of 495887281 is 182788594.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 447111025 + 48776256 = 21145^2 + 6984^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-495887281 is a prime.

It is a super-2 number, since 2×495887281² = 491808390915145922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (495887201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247943640 + 247943641.

It is an arithmetic number, because the mean of its divisors is an integer number (247943641).

Almost surely, 2^495887281 is an apocalyptic number.

It is an amenable number.

495887281 is a deficient number, since it is larger than the sum of its proper divisors (1).

495887281 is an equidigital number, since it uses as much as digits as its factorization.

495887281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1290240, while the sum is 52.

The square root of 495887281 is about 22268.5266912744. The cubic root of 495887281 is about 791.5183537393.

The spelling of 495887281 in words is "four hundred ninety-five million, eight hundred eighty-seven thousand, two hundred eighty-one".