495994551 has 24 divisors (see below), whose sum is σ = 732796416. Its totient is φ = 298116000.

The previous prime is 495994547. The next prime is 495994553. The reversal of 495994551 is 155499594.

It is not a de Polignac number, because 495994551 - 2² = 495994547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 495994494 and 495994503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495994553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10426 + ... + 33176.

It is an arithmetic number, because the mean of its divisors is an integer number (30533184).

Almost surely, 2^495994551 is an apocalyptic number.

495994551 is a deficient number, since it is larger than the sum of its proper divisors (236801865).

495994551 is a wasteful number, since it uses less digits than its factorization.

495994551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22823 (or 22810 counting only the distinct ones).

The product of its digits is 1458000, while the sum is 51.

The square root of 495994551 is about 22270.9351173228. The cubic root of 495994551 is about 791.5754231954.

The spelling of 495994551 in words is "four hundred ninety-five million, nine hundred ninety-four thousand, five hundred fifty-one".