55195199 has 2 divisors, whose sum is σ = 55195200. Its totient is φ = 55195198.

The previous prime is 55195177. The next prime is 55195211. The reversal of 55195199 is 99159155.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55195199 is a 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 (55195109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27597599 + 27597600.

It is an arithmetic number, because the mean of its divisors is an integer number (27597600).

Almost surely, 2^55195199 is an apocalyptic number.

55195199 is a deficient number, since it is larger than the sum of its proper divisors (1).

55195199 is an equidigital number, since it uses as much as digits as its factorization.

55195199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91125, while the sum is 44.

The square root of 55195199 is about 7429.3471449381. The cubic root of 55195199 is about 380.7446133776.

The spelling of 55195199 in words is "fifty-five million, one hundred ninety-five thousand, one hundred ninety-nine".