55099858 has 16 divisors (see below), whose sum is σ = 94084416. Its totient is φ = 23956240.

The previous prime is 55099853. The next prime is 55099861. The reversal of 55099858 is 85899055.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55099853) 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, 53941 + ... + 54952.

It is an arithmetic number, because the mean of its divisors is an integer number (5880276).

Almost surely, 2^55099858 is an apocalyptic number.

55099858 is a deficient number, since it is larger than the sum of its proper divisors (38984558).

55099858 is a wasteful number, since it uses less digits than its factorization.

55099858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108929.

The product of its (nonzero) digits is 648000, while the sum is 49.

The square root of 55099858 is about 7422.9278590055. The cubic root of 55099858 is about 380.5252616098.

The spelling of 55099858 in words is "fifty-five million, ninety-nine thousand, eight hundred fifty-eight".