499975555 has 4 divisors (see below), whose sum is σ = 599970672. Its totient is φ = 399980440.

The previous prime is 499975537. The next prime is 499975579. The reversal of 499975555 is 555579994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555579994 = 2 ⋅277789997.

It is a de Polignac number, because none of the positive numbers 2^k-499975555 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 499975555.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49997551 + ... + 49997560.

It is an arithmetic number, because the mean of its divisors is an integer number (149992668).

Almost surely, 2^499975555 is an apocalyptic number.

499975555 is a deficient number, since it is larger than the sum of its proper divisors (99995117).

499975555 is an equidigital number, since it uses as much as digits as its factorization.

499975555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99995116.

The product of its digits is 12757500, while the sum is 58.

The square root of 499975555 is about 22360.1331614997. The cubic root of 499975555 is about 793.6875911004.

The spelling of 499975555 in words is "four hundred ninety-nine million, nine hundred seventy-five thousand, five hundred fifty-five".