556625601 has 20 divisors (see below), whose sum is σ = 950289472. Its totient is φ = 318071448.

The previous prime is 556625591. The next prime is 556625627. The reversal of 556625601 is 106526655.

It is a happy number.

It is not a de Polignac number, because 556625601 - 2⁵ = 556625569 is a prime.

It is a super-2 number, since 2×556625601² = 619664119377222402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556625651) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 490285 + ... + 491418.

Almost surely, 2^556625601 is an apocalyptic number.

It is an amenable number.

556625601 is a deficient number, since it is larger than the sum of its proper divisors (393663871).

556625601 is an equidigital number, since it uses as much as digits as its factorization.

556625601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981722 (or 981713 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 556625601 is about 23592.9142116865. The cubic root of 556625601 is about 822.5981447479.

The spelling of 556625601 in words is "five hundred fifty-six million, six hundred twenty-five thousand, six hundred one".