555489247 has 2 divisors, whose sum is σ = 555489248. Its totient is φ = 555489246.

The previous prime is 555489199. The next prime is 555489257. The reversal of 555489247 is 742984555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 555489247 - 2²³ = 547100639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 555489247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555489257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277744623 + 277744624.

It is an arithmetic number, because the mean of its divisors is an integer number (277744624).

Almost surely, 2^555489247 is an apocalyptic number.

555489247 is a deficient number, since it is larger than the sum of its proper divisors (1).

555489247 is an equidigital number, since it uses as much as digits as its factorization.

555489247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016000, while the sum is 49.

The square root of 555489247 is about 23568.8193806987. The cubic root of 555489247 is about 822.0379839501.

The spelling of 555489247 in words is "five hundred fifty-five million, four hundred eighty-nine thousand, two hundred forty-seven".