55890103 has 2 divisors, whose sum is σ = 55890104. Its totient is φ = 55890102.

The previous prime is 55890089. The next prime is 55890157. The reversal of 55890103 is 30109855.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55890103 - 2⁵ = 55890071 is a prime.

It is a super-2 number, since 2×55890103² = 6247407226701218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55890193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27945051 + 27945052.

It is an arithmetic number, because the mean of its divisors is an integer number (27945052).

Almost surely, 2^55890103 is an apocalyptic number.

55890103 is a deficient number, since it is larger than the sum of its proper divisors (1).

55890103 is an equidigital number, since it uses as much as digits as its factorization.

55890103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 55890103 is about 7475.9683653691. The cubic root of 55890103 is about 382.3358043318.

Adding to 55890103 its reverse (30109855), we get a palindrome (85999958).

The spelling of 55890103 in words is "fifty-five million, eight hundred ninety thousand, one hundred three".