55622899 has 18 divisors (see below), whose sum is σ = 61684220. Its totient is φ = 50015952.

The previous prime is 55622869. The next prime is 55622909. The reversal of 55622899 is 99822655.

It is a happy number.

It is not a de Polignac number, because 55622899 - 2⁵ = 55622867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55622839) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 942732 + ... + 942790.

Almost surely, 2^55622899 is an apocalyptic number.

55622899 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

55622899 is a deficient number, since it is larger than the sum of its proper divisors (6061321).

55622899 is an equidigital number, since it uses as much as digits as its factorization.

55622899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 107 counting only the distinct ones).

The product of its digits is 388800, while the sum is 46.

The square root of 55622899 is about 7458.0760923981. The cubic root of 55622899 is about 381.7255299291.

The spelling of 55622899 in words is "fifty-five million, six hundred twenty-two thousand, eight hundred ninety-nine".