461491515 has 12 divisors (see below), whose sum is σ = 799918704. Its totient is φ = 246128784.

The previous prime is 461491493. The next prime is 461491517. The reversal of 461491515 is 515194164.

461491515 is a `hidden beast` number, since 46 + 14 + 91 + 515 = 666.

It is not a de Polignac number, because 461491515 - 2⁹ = 461491003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 461491515.

It is not an unprimeable number, because it can be changed into a prime (461491517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5127639 + ... + 5127728.

It is an arithmetic number, because the mean of its divisors is an integer number (66659892).

Almost surely, 2^461491515 is an apocalyptic number.

461491515 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

461491515 is a deficient number, since it is larger than the sum of its proper divisors (338427189).

461491515 is a wasteful number, since it uses less digits than its factorization.

461491515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10255378 (or 10255375 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 461491515 is about 21482.3535721764. The cubic root of 461491515 is about 772.7776863261. Note that the first 3 decimals are identical.

The spelling of 461491515 in words is "four hundred sixty-one million, four hundred ninety-one thousand, five hundred fifteen".