556984903 has 2 divisors, whose sum is σ = 556984904. Its totient is φ = 556984902.

The previous prime is 556984849. The next prime is 556984907. The reversal of 556984903 is 309489655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 556984903 - 2¹⁷ = 556853831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556984907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278492451 + 278492452.

It is an arithmetic number, because the mean of its divisors is an integer number (278492452).

Almost surely, 2^556984903 is an apocalyptic number.

556984903 is a deficient number, since it is larger than the sum of its proper divisors (1).

556984903 is an equidigital number, since it uses as much as digits as its factorization.

556984903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The square root of 556984903 is about 23600.5276000347. The cubic root of 556984903 is about 822.7751024648.

The spelling of 556984903 in words is "five hundred fifty-six million, nine hundred eighty-four thousand, nine hundred three".