55568503 has 2 divisors, whose sum is σ = 55568504. Its totient is φ = 55568502.

The previous prime is 55568467. The next prime is 55568509. The reversal of 55568503 is 30586555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55568503 - 2¹³ = 55560311 is a prime.

It is a super-2 number, since 2×55568503² = 6175717051322018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55568509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27784251 + 27784252.

It is an arithmetic number, because the mean of its divisors is an integer number (27784252).

Almost surely, 2^55568503 is an apocalyptic number.

55568503 is a deficient number, since it is larger than the sum of its proper divisors (1).

55568503 is an equidigital number, since it uses as much as digits as its factorization.

55568503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90000, while the sum is 37.

The square root of 55568503 is about 7454.4284153783. The cubic root of 55568503 is about 381.6010541301.

The spelling of 55568503 in words is "fifty-five million, five hundred sixty-eight thousand, five hundred three".