556346261 has 8 divisors (see below), whose sum is σ = 576785664. Its totient is φ = 536234080.

The previous prime is 556346251. The next prime is 556346281. The reversal of 556346261 is 162643655.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-556346261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556346251) 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 7 ways as a sum of consecutive naturals, for example, 78341 + ... + 85146.

It is an arithmetic number, because the mean of its divisors is an integer number (72098208).

Almost surely, 2^556346261 is an apocalyptic number.

It is an amenable number.

556346261 is a deficient number, since it is larger than the sum of its proper divisors (20439403).

556346261 is a wasteful number, since it uses less digits than its factorization.

556346261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163611.

The product of its digits is 129600, while the sum is 38.

The square root of 556346261 is about 23586.9934709789. The cubic root of 556346261 is about 822.4605160230.

The spelling of 556346261 in words is "five hundred fifty-six million, three hundred forty-six thousand, two hundred sixty-one".