55322899 has 4 divisors (see below), whose sum is σ = 56672280. Its totient is φ = 53973520.

The previous prime is 55322893. The next prime is 55322909. The reversal of 55322899 is 99822355.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99822355 = 5 ⋅19964471.

It is a cyclic number.

It is not a de Polignac number, because 55322899 - 2⁵ = 55322867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55322893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 674629 + ... + 674710.

It is an arithmetic number, because the mean of its divisors is an integer number (14168070).

Almost surely, 2^55322899 is an apocalyptic number.

55322899 is a deficient number, since it is larger than the sum of its proper divisors (1349381).

55322899 is a wasteful number, since it uses less digits than its factorization.

55322899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349380.

The product of its digits is 194400, while the sum is 43.

The square root of 55322899 is about 7437.9364745876. The cubic root of 55322899 is about 381.0380183563.

The spelling of 55322899 in words is "fifty-five million, three hundred twenty-two thousand, eight hundred ninety-nine".