55199808 has 84 divisors (see below), whose sum is σ = 161665920. Its totient is φ = 17999616.

The previous prime is 55199803. The next prime is 55199813. The reversal of 55199808 is 80899155.

55199808 is a `hidden beast` number, since 551 + 9 + 98 + 0 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (55199803) and next prime (55199813).

It is not an unprimeable number, because it can be changed into a prime (55199801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26053 + ... + 28091.

Almost surely, 2^55199808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55199808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80832960).

55199808 is an abundant number, since it is smaller than the sum of its proper divisors (106466112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55199808 is a wasteful number, since it uses less digits than its factorization.

55199808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104 (or 2091 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 45.

The square root of 55199808 is about 7429.6573272258. The cubic root of 55199808 is about 380.7552109363.

The spelling of 55199808 in words is "fifty-five million, one hundred ninety-nine thousand, eight hundred eight".