49564891 has 4 divisors (see below), whose sum is σ = 49578984. Its totient is φ = 49550800.

The previous prime is 49564873. The next prime is 49564913. The reversal of 49564891 is 19846594.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 49564891 - 2¹⁵ = 49532123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49564811) 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, 3096 + ... + 10426.

It is an arithmetic number, because the mean of its divisors is an integer number (12394746).

Almost surely, 2^49564891 is an apocalyptic number.

49564891 is a deficient number, since it is larger than the sum of its proper divisors (14093).

49564891 is an equidigital number, since it uses as much as digits as its factorization.

49564891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14092.

The product of its digits is 311040, while the sum is 46.

The square root of 49564891 is about 7040.2337319154. The cubic root of 49564891 is about 367.3313981260.

The spelling of 49564891 in words is "forty-nine million, five hundred sixty-four thousand, eight hundred ninety-one".