49999855 has 4 divisors (see below), whose sum is σ = 59999832. Its totient is φ = 39999880.

The previous prime is 49999853. The next prime is 49999877. The reversal of 49999855 is 55899994.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 49999855 - 2¹ = 49999853 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49999855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49999853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4999981 + ... + 4999990.

It is an arithmetic number, because the mean of its divisors is an integer number (14999958).

Almost surely, 2^49999855 is an apocalyptic number.

49999855 is a deficient number, since it is larger than the sum of its proper divisors (9999977).

49999855 is an equidigital number, since it uses as much as digits as its factorization.

49999855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9999976.

The product of its digits is 5248800, while the sum is 58.

The square root of 49999855 is about 7071.0575588097. The cubic root of 49999855 is about 368.4027937406.

The spelling of 49999855 in words is "forty-nine million, nine hundred ninety-nine thousand, eight hundred fifty-five".