55072199 has 16 divisors (see below), whose sum is σ = 68201280. Its totient is φ = 43561440.

The previous prime is 55072181. The next prime is 55072201. The reversal of 55072199 is 99127055.

55072199 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55072199 - 2⁸ = 55071943 is a prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55072159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13589 + ... + 17169.

It is an arithmetic number, because the mean of its divisors is an integer number (4262580).

Almost surely, 2^55072199 is an apocalyptic number.

55072199 is a deficient number, since it is larger than the sum of its proper divisors (13129081).

55072199 is an equidigital number, since it uses as much as digits as its factorization.

55072199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3627 (or 3601 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 38.

The square root of 55072199 is about 7421.0645462764. The cubic root of 55072199 is about 380.4615789907.

The spelling of 55072199 in words is "fifty-five million, seventy-two thousand, one hundred ninety-nine".