555560623 has 2 divisors, whose sum is σ = 555560624. Its totient is φ = 555560622.

The previous prime is 555560597. The next prime is 555560647. The reversal of 555560623 is 326065555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 555560623 - 2¹⁷ = 555429551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555560023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277780311 + 277780312.

It is an arithmetic number, because the mean of its divisors is an integer number (277780312).

Almost surely, 2^555560623 is an apocalyptic number.

555560623 is a deficient number, since it is larger than the sum of its proper divisors (1).

555560623 is an equidigital number, since it uses as much as digits as its factorization.

555560623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135000, while the sum is 37.

The square root of 555560623 is about 23570.3335360364. Note that the first 3 decimals coincide. The cubic root of 555560623 is about 822.0731909144.

The spelling of 555560623 in words is "five hundred fifty-five million, five hundred sixty thousand, six hundred twenty-three".