555612257 has 2 divisors, whose sum is σ = 555612258. Its totient is φ = 555612256.

The previous prime is 555612251. The next prime is 555612289. The reversal of 555612257 is 752216555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 436016161 + 119596096 = 20881^2 + 10936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-555612257 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 555612257.

It is not a weakly prime, because it can be changed into another prime (555612251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277806128 + 277806129.

It is an arithmetic number, because the mean of its divisors is an integer number (277806129).

Almost surely, 2^555612257 is an apocalyptic number.

It is an amenable number.

555612257 is a deficient number, since it is larger than the sum of its proper divisors (1).

555612257 is an equidigital number, since it uses as much as digits as its factorization.

555612257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105000, while the sum is 38.

The square root of 555612257 is about 23571.4288281385. The cubic root of 555612257 is about 822.0986580494.

The spelling of 555612257 in words is "five hundred fifty-five million, six hundred twelve thousand, two hundred fifty-seven".