55127199 has 4 divisors (see below), whose sum is σ = 73502936. Its totient is φ = 36751464.

The previous prime is 55127197. The next prime is 55127203. The reversal of 55127199 is 99172155.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55127199 - 2¹ = 55127197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55127197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9187864 + ... + 9187869.

It is an arithmetic number, because the mean of its divisors is an integer number (18375734).

Almost surely, 2^55127199 is an apocalyptic number.

55127199 is a deficient number, since it is larger than the sum of its proper divisors (18375737).

55127199 is a wasteful number, since it uses less digits than its factorization.

55127199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18375736.

The product of its digits is 28350, while the sum is 39.

The square root of 55127199 is about 7424.7692893450. The cubic root of 55127199 is about 380.5881911175.

The spelling of 55127199 in words is "fifty-five million, one hundred twenty-seven thousand, one hundred ninety-nine".