556197899 has 4 divisors (see below), whose sum is σ = 558834120. Its totient is φ = 553561680.

The previous prime is 556197869. The next prime is 556197907. The reversal of 556197899 is 998791655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 556197899 - 2¹⁶ = 556132363 is a prime.

It is a super-2 number, since 2×556197899² = 618712205704028402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556197839) 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, 1317794 + ... + 1318215.

It is an arithmetic number, because the mean of its divisors is an integer number (139708530).

Almost surely, 2^556197899 is an apocalyptic number.

556197899 is a deficient number, since it is larger than the sum of its proper divisors (2636221).

556197899 is a wasteful number, since it uses less digits than its factorization.

556197899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636220.

The product of its digits is 6123600, while the sum is 59.

The square root of 556197899 is about 23583.8482652853. The cubic root of 556197899 is about 822.3874004450.

The spelling of 556197899 in words is "five hundred fifty-six million, one hundred ninety-seven thousand, eight hundred ninety-nine".