55443199 has 4 divisors (see below), whose sum is σ = 63363664. Its totient is φ = 47522736.

The previous prime is 55443169. The next prime is 55443209. The reversal of 55443199 is 99134455.

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

It is a cyclic number.

It is not a de Polignac number, because 55443199 - 2⁷ = 55443071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55443109) 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, 3960222 + ... + 3960235.

It is an arithmetic number, because the mean of its divisors is an integer number (15840916).

Almost surely, 2^55443199 is an apocalyptic number.

55443199 is a deficient number, since it is larger than the sum of its proper divisors (7920465).

55443199 is an equidigital number, since it uses as much as digits as its factorization.

55443199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7920464.

The product of its digits is 97200, while the sum is 40.

The square root of 55443199 is about 7446.0190034676. The cubic root of 55443199 is about 381.3140082802.

The spelling of 55443199 in words is "fifty-five million, four hundred forty-three thousand, one hundred ninety-nine".