556261601 has 16 divisors (see below), whose sum is σ = 671376384. Its totient is φ = 450559824.

The previous prime is 556261577. The next prime is 556261609. The reversal of 556261601 is 106162655.

It is a cyclic number.

It is not a de Polignac number, because 556261601 - 2²² = 552067297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (556261609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7451 + ... + 34176.

It is an arithmetic number, because the mean of its divisors is an integer number (41961024).

Almost surely, 2^556261601 is an apocalyptic number.

It is an amenable number.

556261601 is a deficient number, since it is larger than the sum of its proper divisors (115114783).

556261601 is a wasteful number, since it uses less digits than its factorization.

556261601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41740.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 556261601 is about 23585.1987695673. The cubic root of 556261601 is about 822.4187955787.

The spelling of 556261601 in words is "five hundred fifty-six million, two hundred sixty-one thousand, six hundred one".