55429899 has 16 divisors (see below), whose sum is σ = 85113600. Its totient is φ = 31430880.

The previous prime is 55429883. The next prime is 55429901. The reversal of 55429899 is 99892455.

It is not a de Polignac number, because 55429899 - 2⁴ = 55429883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55429819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7324 + ... + 12825.

It is an arithmetic number, because the mean of its divisors is an integer number (5319600).

Almost surely, 2^55429899 is an apocalyptic number.

55429899 is a deficient number, since it is larger than the sum of its proper divisors (29683701).

55429899 is a wasteful number, since it uses less digits than its factorization.

55429899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20290.

The product of its digits is 1166400, while the sum is 51.

The square root of 55429899 is about 7445.1258552156. The cubic root of 55429899 is about 381.2835153193.

The spelling of 55429899 in words is "fifty-five million, four hundred twenty-nine thousand, eight hundred ninety-nine".