55112503 has 2 divisors, whose sum is σ = 55112504. Its totient is φ = 55112502.

The previous prime is 55112467. The next prime is 55112507. The reversal of 55112503 is 30521155.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55112503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55112507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27556251 + 27556252.

It is an arithmetic number, because the mean of its divisors is an integer number (27556252).

Almost surely, 2^55112503 is an apocalyptic number.

55112503 is a deficient number, since it is larger than the sum of its proper divisors (1).

55112503 is an equidigital number, since it uses as much as digits as its factorization.

55112503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 55112503 is about 7423.7795629989. The cubic root of 55112503 is about 380.5543686049.

Adding to 55112503 its reverse (30521155), we get a palindrome (85633658).

The spelling of 55112503 in words is "fifty-five million, one hundred twelve thousand, five hundred three".