55129103 has 2 divisors, whose sum is σ = 55129104. Its totient is φ = 55129102.

The previous prime is 55129093. The next prime is 55129111. The reversal of 55129103 is 30192155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55129103 - 2⁸ = 55128847 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55129603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27564551 + 27564552.

It is an arithmetic number, because the mean of its divisors is an integer number (27564552).

Almost surely, 2^55129103 is an apocalyptic number.

55129103 is a deficient number, since it is larger than the sum of its proper divisors (1).

55129103 is an equidigital number, since it uses as much as digits as its factorization.

55129103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 55129103 is about 7424.8975077101. The cubic root of 55129103 is about 380.5925726907.

The spelling of 55129103 in words is "fifty-five million, one hundred twenty-nine thousand, one hundred three".