556392997 has 2 divisors, whose sum is σ = 556392998. Its totient is φ = 556392996.

The previous prime is 556392961. The next prime is 556393037. The reversal of 556392997 is 799293655.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 524684836 + 31708161 = 22906^2 + 5631^2 .

It is a cyclic number.

It is not a de Polignac number, because 556392997 - 2¹¹ = 556390949 is a prime.

It is a super-2 number, since 2×556392997² = 619146334221284018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556392197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278196498 + 278196499.

It is an arithmetic number, because the mean of its divisors is an integer number (278196499).

Almost surely, 2^556392997 is an apocalyptic number.

It is an amenable number.

556392997 is a deficient number, since it is larger than the sum of its proper divisors (1).

556392997 is an equidigital number, since it uses as much as digits as its factorization.

556392997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4592700, while the sum is 55.

The square root of 556392997 is about 23587.9841656721. The cubic root of 556392997 is about 822.4835457085.

The spelling of 556392997 in words is "five hundred fifty-six million, three hundred ninety-two thousand, nine hundred ninety-seven".