556144261 has 4 divisors (see below), whose sum is σ = 556260300. Its totient is φ = 556028224.

The previous prime is 556144249. The next prime is 556144289. The reversal of 556144261 is 162441655.

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 133841761 + 422302500 = 11569^2 + 20550^2 .

It is a cyclic number.

It is not a de Polignac number, because 556144261 - 2¹⁹ = 555619973 is a prime.

It is a super-2 number, since 2×556144261² = 618592878086472242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556144291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50506 + ... + 60523.

It is an arithmetic number, because the mean of its divisors is an integer number (139065075).

Almost surely, 2^556144261 is an apocalyptic number.

It is an amenable number.

556144261 is a deficient number, since it is larger than the sum of its proper divisors (116039).

556144261 is a wasteful number, since it uses less digits than its factorization.

556144261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116038.

The product of its digits is 28800, while the sum is 34.

The square root of 556144261 is about 23582.7110612839. The cubic root of 556144261 is about 822.3609634319.

The spelling of 556144261 in words is "five hundred fifty-six million, one hundred forty-four thousand, two hundred sixty-one".