556135091 has 2 divisors, whose sum is σ = 556135092. Its totient is φ = 556135090.

The previous prime is 556135079. The next prime is 556135141. The reversal of 556135091 is 190531655.

It is a happy number.

556135091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556135091 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (556135031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278067545 + 278067546.

It is an arithmetic number, because the mean of its divisors is an integer number (278067546).

Almost surely, 2^556135091 is an apocalyptic number.

556135091 is a deficient number, since it is larger than the sum of its proper divisors (1).

556135091 is an equidigital number, since it uses as much as digits as its factorization.

556135091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20250, while the sum is 35.

The square root of 556135091 is about 23582.5166383912. The cubic root of 556135091 is about 822.3564435665.

The spelling of 556135091 in words is "five hundred fifty-six million, one hundred thirty-five thousand, ninety-one".