5555863 has 2 divisors, whose sum is σ = 5555864. Its totient is φ = 5555862.

The previous prime is 5555861. The next prime is 5555873. The reversal of 5555863 is 3685555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5555863 - 2¹ = 5555861 is a prime.

It is a super-2 number, since 2×5555863² = 61735227349538, which contains 22 as substring.

Together with 5555861, it forms a pair of twin primes.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5555861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777931 + 2777932.

It is an arithmetic number, because the mean of its divisors is an integer number (2777932).

Almost surely, 2^5555863 is an apocalyptic number.

5555863 is a deficient number, since it is larger than the sum of its proper divisors (1).

5555863 is an equidigital number, since it uses as much as digits as its factorization.

5555863 is an evil number, because the sum of its binary digits is even.

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

The square root of 5555863 is about 2357.0878218683. The cubic root of 5555863 is about 177.1130285549.

The spelling of 5555863 in words is "five million, five hundred fifty-five thousand, eight hundred sixty-three".