495651 has 16 divisors (see below), whose sum is σ = 725760. Its totient is φ = 299040.

The previous prime is 495647. The next prime is 495667. The reversal of 495651 is 156594.

495651 = 46² + 47² + ... + 116².

It is not a de Polignac number, because 495651 - 2² = 495647 is a prime.

495651 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (495611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2680 + ... + 2858.

It is an arithmetic number, because the mean of its divisors is an integer number (45360).

2⁴⁹⁵⁶⁵¹ is an apocalyptic number.

495651 is a deficient number, since it is larger than the sum of its proper divisors (230109).

495651 is a wasteful number, since it uses less digits than its factorization.

495651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266.

The product of its digits is 5400, while the sum is 30.

The square root of 495651 is about 704.0248575157. The cubic root of 495651 is about 79.1392619211.

The spelling of 495651 in words is "four hundred ninety-five thousand, six hundred fifty-one".