507981655 has 8 divisors (see below), whose sum is σ = 629241984. Its totient is φ = 393276000.

The previous prime is 507981647. The next prime is 507981697. The reversal of 507981655 is 556189705.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 507981655 - 2³ = 507981647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1638496 + ... + 1638805.

It is an arithmetic number, because the mean of its divisors is an integer number (78655248).

Almost surely, 2^507981655 is an apocalyptic number.

507981655 is a deficient number, since it is larger than the sum of its proper divisors (121260329).

507981655 is a wasteful number, since it uses less digits than its factorization.

507981655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277337.

The product of its (nonzero) digits is 378000, while the sum is 46.

The square root of 507981655 is about 22538.4483716160. The cubic root of 507981655 is about 797.9016127552.

The spelling of 507981655 in words is "five hundred seven million, nine hundred eighty-one thousand, six hundred fifty-five".