556548149 has 4 divisors (see below), whose sum is σ = 558713964. Its totient is φ = 554382336.

The previous prime is 556548137. The next prime is 556548151. The reversal of 556548149 is 941845655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 362140900 + 194407249 = 19030^2 + 13943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556548149 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 (556548169) 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, 1082522 + ... + 1083035.

It is an arithmetic number, because the mean of its divisors is an integer number (139678491).

Almost surely, 2^556548149 is an apocalyptic number.

It is an amenable number.

556548149 is a deficient number, since it is larger than the sum of its proper divisors (2165815).

556548149 is a wasteful number, since it uses less digits than its factorization.

556548149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165814.

The product of its digits is 864000, while the sum is 47.

The square root of 556548149 is about 23591.2727295498. The cubic root of 556548149 is about 822.5599893423.

The spelling of 556548149 in words is "five hundred fifty-six million, five hundred forty-eight thousand, one hundred forty-nine".