556225277 has 4 divisors (see below), whose sum is σ = 557801340. Its totient is φ = 554649216.

The previous prime is 556225237. The next prime is 556225283. The reversal of 556225277 is 772522655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 772522655 = 5 ⋅154504531.

It can be written as a sum of positive squares in 2 ways, for example, as 237745561 + 318479716 = 15419^2 + 17846^2 .

It is a cyclic number.

It is not a de Polignac number, because 556225277 - 2¹⁶ = 556159741 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 (556225207) 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, 787502 + ... + 788207.

It is an arithmetic number, because the mean of its divisors is an integer number (139450335).

Almost surely, 2^556225277 is an apocalyptic number.

It is an amenable number.

556225277 is a deficient number, since it is larger than the sum of its proper divisors (1576063).

556225277 is a wasteful number, since it uses less digits than its factorization.

556225277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576062.

The product of its digits is 294000, while the sum is 41.

The square root of 556225277 is about 23584.4286977658. The cubic root of 556225277 is about 822.4008938154.

The spelling of 556225277 in words is "five hundred fifty-six million, two hundred twenty-five thousand, two hundred seventy-seven".