555990655 has 16 divisors (see below), whose sum is σ = 728628768. Its totient is φ = 403920000.

The previous prime is 555990653. The next prime is 555990671. The reversal of 555990655 is 556099555.

It is not a de Polignac number, because 555990655 - 2¹ = 555990653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 555990599 and 555990608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555990653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51205 + ... + 61105.

It is an arithmetic number, because the mean of its divisors is an integer number (45539298).

Almost surely, 2^555990655 is an apocalyptic number.

555990655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

555990655 is a deficient number, since it is larger than the sum of its proper divisors (172638113).

555990655 is a wasteful number, since it uses less digits than its factorization.

555990655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10938.

The product of its (nonzero) digits is 1518750, while the sum is 49.

The square root of 555990655 is about 23579.4540861319. The cubic root of 555990655 is about 822.2852449427.

Subtracting 555990655 from its reverse (556099555), we obtain a square (108900 = 330²).

The spelling of 555990655 in words is "five hundred fifty-five million, nine hundred ninety thousand, six hundred fifty-five".