555997623 has 4 divisors (see below), whose sum is σ = 741330168. Its totient is φ = 370665080.

The previous prime is 555997601. The next prime is 555997633. The reversal of 555997623 is 326799555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 555997623 - 2¹⁰ = 555996599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555997633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92666268 + ... + 92666273.

It is an arithmetic number, because the mean of its divisors is an integer number (185332542).

Almost surely, 2^555997623 is an apocalyptic number.

555997623 is a deficient number, since it is larger than the sum of its proper divisors (185332545).

555997623 is a wasteful number, since it uses less digits than its factorization.

555997623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185332544.

The product of its digits is 2551500, while the sum is 51.

The square root of 555997623 is about 23579.6018414222. The cubic root of 555997623 is about 822.2886800481.

The spelling of 555997623 in words is "five hundred fifty-five million, nine hundred ninety-seven thousand, six hundred twenty-three".