495919561 has 4 divisors (see below), whose sum is σ = 497349072. Its totient is φ = 494490052.

The previous prime is 495919553. The next prime is 495919591. The reversal of 495919561 is 165919594.

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.

It is a cyclic number.

It is not a de Polignac number, because 495919561 - 2³ = 495919553 is a prime.

It is a super-3 number, since 3×495919561³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (495919591) 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, 714235 + ... + 714928.

It is an arithmetic number, because the mean of its divisors is an integer number (124337268).

Almost surely, 2^495919561 is an apocalyptic number.

It is an amenable number.

495919561 is a deficient number, since it is larger than the sum of its proper divisors (1429511).

495919561 is a wasteful number, since it uses less digits than its factorization.

495919561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429510.

The product of its digits is 437400, while the sum is 49.

The square root of 495919561 is about 22269.2514692344. The cubic root of 495919561 is about 791.5355281114.

The spelling of 495919561 in words is "four hundred ninety-five million, nine hundred nineteen thousand, five hundred sixty-one".