49999566 has 8 divisors (see below), whose sum is σ = 99999144. Its totient is φ = 16666520.

The previous prime is 49999561. The next prime is 49999589. The reversal of 49999566 is 66599994.

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

49999566 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49999561) 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, 4166625 + ... + 4166636.

It is an arithmetic number, because the mean of its divisors is an integer number (12499893).

Almost surely, 2^49999566 is an apocalyptic number.

49999566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

49999566 is a wasteful number, since it uses less digits than its factorization.

49999566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8333266.

The product of its digits is 4723920, while the sum is 57.

The square root of 49999566 is about 7071.0371233646. The cubic root of 49999566 is about 368.4020839478.

The spelling of 49999566 in words is "forty-nine million, nine hundred ninety-nine thousand, five hundred sixty-six".