556236145 has 4 divisors (see below), whose sum is σ = 667483380. Its totient is φ = 444988912.

The previous prime is 556236143. The next prime is 556236227. The reversal of 556236145 is 541632655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541632655 = 5 ⋅108326531.

It can be written as a sum of positive squares in 2 ways, for example, as 354794896 + 201441249 = 18836^2 + 14193^2 .

It is a cyclic number.

It is not a de Polignac number, because 556236145 - 2¹ = 556236143 is a prime.

It is a super-2 number, since 2×556236145² = 618797298008922050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (556236143) 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, 55623610 + ... + 55623619.

It is an arithmetic number, because the mean of its divisors is an integer number (166870845).

Almost surely, 2^556236145 is an apocalyptic number.

It is an amenable number.

556236145 is a deficient number, since it is larger than the sum of its proper divisors (111247235).

556236145 is a wasteful number, since it uses less digits than its factorization.

556236145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111247234.

The product of its digits is 108000, while the sum is 37.

The square root of 556236145 is about 23584.6591028999. The cubic root of 556236145 is about 822.4062500353.

The spelling of 556236145 in words is "five hundred fifty-six million, two hundred thirty-six thousand, one hundred forty-five".