55103143 has 2 divisors, whose sum is σ = 55103144. Its totient is φ = 55103142.

The previous prime is 55103131. The next prime is 55103177. The reversal of 55103143 is 34130155.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55103143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55106143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27551571 + 27551572.

It is an arithmetic number, because the mean of its divisors is an integer number (27551572).

Almost surely, 2^55103143 is an apocalyptic number.

55103143 is a deficient number, since it is larger than the sum of its proper divisors (1).

55103143 is an equidigital number, since it uses as much as digits as its factorization.

55103143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 55103143 is about 7423.1491295811. The cubic root of 55103143 is about 380.5328236416.

Adding to 55103143 its reverse (34130155), we get a palindrome (89233298).

The spelling of 55103143 in words is "fifty-five million, one hundred three thousand, one hundred forty-three".