55099811 has 8 divisors (see below), whose sum is σ = 60006240. Its totient is φ = 50288832.

The previous prime is 55099801. The next prime is 55099831. The reversal of 55099811 is 11899055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55099811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55099801) 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 7 ways as a sum of consecutive naturals, for example, 22655 + ... + 24968.

It is an arithmetic number, because the mean of its divisors is an integer number (7500780).

Almost surely, 2^55099811 is an apocalyptic number.

55099811 is a deficient number, since it is larger than the sum of its proper divisors (4906429).

55099811 is a wasteful number, since it uses less digits than its factorization.

55099811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47725.

The product of its (nonzero) digits is 16200, while the sum is 38.

The square root of 55099811 is about 7422.9246931381. The cubic root of 55099811 is about 380.5251534141.

The spelling of 55099811 in words is "fifty-five million, ninety-nine thousand, eight hundred eleven".