556660033 has 4 divisors (see below), whose sum is σ = 556712368. Its totient is φ = 556607700.

The previous prime is 556660021. The next prime is 556660051. The reversal of 556660033 is 330066655.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 330066655 = 5 ⋅66013331.

It is a cyclic number.

It is not a de Polignac number, because 556660033 - 2¹⁷ = 556528961 is a prime.

It is a super-2 number, since 2×556660033² = 619740784679122178, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (556660073) 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, 3891 + ... + 33592.

It is an arithmetic number, because the mean of its divisors is an integer number (139178092).

Almost surely, 2^556660033 is an apocalyptic number.

It is an amenable number.

556660033 is a deficient number, since it is larger than the sum of its proper divisors (52335).

556660033 is a wasteful number, since it uses less digits than its factorization.

556660033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52334.

The product of its (nonzero) digits is 48600, while the sum is 34.

The square root of 556660033 is about 23593.6439110198. The cubic root of 556660033 is about 822.6151059485.

The spelling of 556660033 in words is "five hundred fifty-six million, six hundred sixty thousand, thirty-three".