55112399 has 2 divisors, whose sum is σ = 55112400. Its totient is φ = 55112398.

The previous prime is 55112377. The next prime is 55112411. The reversal of 55112399 is 99321155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55112399 - 2⁸ = 55112143 is a prime.

It is a super-4 number, since 4×55112399⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55112359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27556199 + 27556200.

It is an arithmetic number, because the mean of its divisors is an integer number (27556200).

Almost surely, 2^55112399 is an apocalyptic number.

55112399 is a deficient number, since it is larger than the sum of its proper divisors (1).

55112399 is an equidigital number, since it uses as much as digits as its factorization.

55112399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12150, while the sum is 35.

The square root of 55112399 is about 7423.7725584773. The cubic root of 55112399 is about 380.5541292298.

The spelling of 55112399 in words is "fifty-five million, one hundred twelve thousand, three hundred ninety-nine".