556543201 has 4 divisors (see below), whose sum is σ = 556597504. Its totient is φ = 556488900.

The previous prime is 556543189. The next prime is 556543241. The reversal of 556543201 is 102345655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 102345655 = 5 ⋅20469131.

It is a cyclic number.

It is not a de Polignac number, because 556543201 - 2¹⁵ = 556510433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556543241) 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, 6585 + ... + 34006.

It is an arithmetic number, because the mean of its divisors is an integer number (139149376).

Almost surely, 2^556543201 is an apocalyptic number.

It is an amenable number.

556543201 is a deficient number, since it is larger than the sum of its proper divisors (54303).

556543201 is a wasteful number, since it uses less digits than its factorization.

556543201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54302.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 556543201 is about 23591.1678600276. The cubic root of 556543201 is about 822.5575516742.

Adding to 556543201 its reverse (102345655), we get a palindrome (658888856).

The spelling of 556543201 in words is "five hundred fifty-six million, five hundred forty-three thousand, two hundred one".