556388633 has 4 divisors (see below), whose sum is σ = 556504848. Its totient is φ = 556272420.

The previous prime is 556388621. The next prime is 556388639. The reversal of 556388633 is 336883655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 556388633 - 2¹⁰ = 556387609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556388639) 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, 50603 + ... + 60608.

It is an arithmetic number, because the mean of its divisors is an integer number (139126212).

Almost surely, 2^556388633 is an apocalyptic number.

It is an amenable number.

556388633 is a deficient number, since it is larger than the sum of its proper divisors (116215).

556388633 is a wasteful number, since it uses less digits than its factorization.

556388633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116214.

The product of its digits is 1555200, while the sum is 47.

The square root of 556388633 is about 23587.8916607653. The cubic root of 556388633 is about 822.4813953534.

The spelling of 556388633 in words is "five hundred fifty-six million, three hundred eighty-eight thousand, six hundred thirty-three".