555591797 has 2 divisors, whose sum is σ = 555591798. Its totient is φ = 555591796.

The previous prime is 555591769. The next prime is 555591821. The reversal of 555591797 is 797195555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 545409316 + 10182481 = 23354^2 + 3191^2 .

It is a cyclic number.

It is not a de Polignac number, because 555591797 - 2²⁴ = 538814581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555591737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277795898 + 277795899.

It is an arithmetic number, because the mean of its divisors is an integer number (277795899).

Almost surely, 2^555591797 is an apocalyptic number.

It is an amenable number.

555591797 is a deficient number, since it is larger than the sum of its proper divisors (1).

555591797 is an equidigital number, since it uses as much as digits as its factorization.

555591797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2480625, while the sum is 53.

The square root of 555591797 is about 23570.9948241477. The cubic root of 555591797 is about 822.0885668724.

The spelling of 555591797 in words is "five hundred fifty-five million, five hundred ninety-one thousand, seven hundred ninety-seven".