556031023 has 2 divisors, whose sum is σ = 556031024. Its totient is φ = 556031022.

The previous prime is 556030961. The next prime is 556031051. The reversal of 556031023 is 320130655.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 556031023 - 2²¹ = 553933871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556031093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278015511 + 278015512.

It is an arithmetic number, because the mean of its divisors is an integer number (278015512).

Almost surely, 2^556031023 is an apocalyptic number.

556031023 is a deficient number, since it is larger than the sum of its proper divisors (1).

556031023 is an equidigital number, since it uses as much as digits as its factorization.

556031023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 556031023 is about 23580.3100700563. The cubic root of 556031023 is about 822.3051452816.

Adding to 556031023 its reverse (320130655), we get a palindrome (876161678).

The spelling of 556031023 in words is "five hundred fifty-six million, thirty-one thousand, twenty-three".