555256487 has 2 divisors, whose sum is σ = 555256488. Its totient is φ = 555256486.

The previous prime is 555256483. The next prime is 555256571. The reversal of 555256487 is 784652555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 555256487 - 2² = 555256483 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555256483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277628243 + 277628244.

It is an arithmetic number, because the mean of its divisors is an integer number (277628244).

Almost surely, 2^555256487 is an apocalyptic number.

555256487 is a deficient number, since it is larger than the sum of its proper divisors (1).

555256487 is an equidigital number, since it uses as much as digits as its factorization.

555256487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680000, while the sum is 47.

The square root of 555256487 is about 23563.8809834034. The cubic root of 555256487 is about 821.9231516691.

The spelling of 555256487 in words is "five hundred fifty-five million, two hundred fifty-six thousand, four hundred eighty-seven".