556144481 has 4 divisors (see below), whose sum is σ = 561650964. Its totient is φ = 550638000.

The previous prime is 556144469. The next prime is 556144507. The reversal of 556144481 is 184441655.

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 498003856 + 58140625 = 22316^2 + 7625^2 .

It is a cyclic number.

It is not a de Polignac number, because 556144481 - 2⁶ = 556144417 is a prime.

It is a super-2 number, since 2×556144481² = 618593367493518722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (556144451) 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, 2753090 + ... + 2753291.

It is an arithmetic number, because the mean of its divisors is an integer number (140412741).

Almost surely, 2^556144481 is an apocalyptic number.

It is an amenable number.

556144481 is a deficient number, since it is larger than the sum of its proper divisors (5506483).

556144481 is a wasteful number, since it uses less digits than its factorization.

556144481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5506482.

The product of its digits is 76800, while the sum is 38.

The square root of 556144481 is about 23582.7157257174. The cubic root of 556144481 is about 822.3610718686.

The spelling of 556144481 in words is "five hundred fifty-six million, one hundred forty-four thousand, four hundred eighty-one".