556155601 has 4 divisors (see below), whose sum is σ = 556430400. Its totient is φ = 555880804.

The previous prime is 556155577. The next prime is 556155619. The reversal of 556155601 is 106551655.

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 556155601 - 2⁵ = 556155569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556155641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134341 + ... + 138418.

It is an arithmetic number, because the mean of its divisors is an integer number (139107600).

Almost surely, 2^556155601 is an apocalyptic number.

It is an amenable number.

556155601 is a deficient number, since it is larger than the sum of its proper divisors (274799).

556155601 is a wasteful number, since it uses less digits than its factorization.

556155601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274798.

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 556155601 is about 23582.9514904305. The cubic root of 556155601 is about 822.3665528149.

It can be divided in two parts, 55615 and 5601, that added together give a palindrome (61216).

The spelling of 556155601 in words is "five hundred fifty-six million, one hundred fifty-five thousand, six hundred one".