495585257 has 4 divisors (see below), whose sum is σ = 495634176. Its totient is φ = 495536340.

The previous prime is 495585253. The next prime is 495585271. The reversal of 495585257 is 752585594.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 752585594 = 2 ⋅376292797.

It is a cyclic number.

It is not a de Polignac number, because 495585257 - 2² = 495585253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (495585253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2969 + ... + 31622.

It is an arithmetic number, because the mean of its divisors is an integer number (123908544).

Almost surely, 2^495585257 is an apocalyptic number.

It is an amenable number.

495585257 is a deficient number, since it is larger than the sum of its proper divisors (48919).

495585257 is a wasteful number, since it uses less digits than its factorization.

495585257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48918.

The product of its digits is 2520000, while the sum is 50.

The square root of 495585257 is about 22261.7442488229. The cubic root of 495585257 is about 791.3576276374.

The spelling of 495585257 in words is "four hundred ninety-five million, five hundred eighty-five thousand, two hundred fifty-seven".