495521637 has 64 divisors (see below), whose sum is σ = 787691520. Its totient is φ = 274450176.

The previous prime is 495521633. The next prime is 495521657. The reversal of 495521637 is 736125594.

It is not a de Polignac number, because 495521637 - 2² = 495521633 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495521633) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1118338 + ... + 1118780.

It is an arithmetic number, because the mean of its divisors is an integer number (12307680).

Almost surely, 2^495521637 is an apocalyptic number.

It is an amenable number.

495521637 is a deficient number, since it is larger than the sum of its proper divisors (292169883).

495521637 is a wasteful number, since it uses less digits than its factorization.

495521637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554.

The product of its digits is 226800, while the sum is 42.

The square root of 495521637 is about 22260.3152942630. The cubic root of 495521637 is about 791.3237630796.

The spelling of 495521637 in words is "four hundred ninety-five million, five hundred twenty-one thousand, six hundred thirty-seven".