556949 has 4 divisors (see below), whose sum is σ = 558540. Its totient is φ = 555360.

The previous prime is 556943. The next prime is 556957. The reversal of 556949 is 949655.

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 208849 + 348100 = 457^2 + 590^2 .

It is a cyclic number.

It is not a de Polignac number, because 556949 - 2⁸ = 556693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556943) 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, 14 + ... + 1055.

It is an arithmetic number, because the mean of its divisors is an integer number (139635).

2⁵⁵⁶⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

556949 is a deficient number, since it is larger than the sum of its proper divisors (1591).

556949 is a wasteful number, since it uses less digits than its factorization.

556949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590.

The product of its digits is 48600, while the sum is 38.

The square root of 556949 is about 746.2901580485. The cubic root of 556949 is about 82.2757423512.

The spelling of 556949 in words is "five hundred fifty-six thousand, nine hundred forty-nine".