495821520 has 80 divisors (see below), whose sum is σ = 1707837120. Its totient is φ = 132218496.

The previous prime is 495821509. The next prime is 495821531. The reversal of 495821520 is 25128594.

495821520 is a `hidden beast` number, since 49 + 582 + 15 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (495821509) and next prime (495821531).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×495821520² = 491677959390220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112614 + ... + 116933.

It is an arithmetic number, because the mean of its divisors is an integer number (21347964).

Almost surely, 2^495821520 is an apocalyptic number.

495821520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

495821520 is an abundant number, since it is smaller than the sum of its proper divisors (1212015600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

495821520 is a wasteful number, since it uses less digits than its factorization.

495821520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229569 (or 229557 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 495821520 is about 22267.0500964991. The cubic root of 495821520 is about 791.4833637046.

The spelling of 495821520 in words is "four hundred ninety-five million, eight hundred twenty-one thousand, five hundred twenty".