495117261 has 12 divisors (see below), whose sum is σ = 739830780. Its totient is φ = 318696000.

The previous prime is 495117229. The next prime is 495117269. The reversal of 495117261 is 162711594.

It can be written as a sum of positive squares in 2 ways, for example, as 310429161 + 184688100 = 17619^2 + 13590^2 .

It is not a de Polignac number, because 495117261 - 2⁵ = 495117229 is a prime.

It is a super-2 number, since 2×495117261² = 490282204280284242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495117269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 948240 + ... + 948761.

It is an arithmetic number, because the mean of its divisors is an integer number (61652565).

Almost surely, 2^495117261 is an apocalyptic number.

It is an amenable number.

495117261 is a deficient number, since it is larger than the sum of its proper divisors (244713519).

495117261 is a wasteful number, since it uses less digits than its factorization.

495117261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897036 (or 1897033 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 495117261 is about 22251.2305502415. The cubic root of 495117261 is about 791.1084482826.

The spelling of 495117261 in words is "four hundred ninety-five million, one hundred seventeen thousand, two hundred sixty-one".