49543813 has 8 divisors (see below), whose sum is σ = 54495936. Its totient is φ = 45038620.

The previous prime is 49543801. The next prime is 49543829. The reversal of 49543813 is 31834594.

It is a de Polignac number, because none of the positive numbers 2^k-49543813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49543853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17281 + ... + 19942.

It is an arithmetic number, because the mean of its divisors is an integer number (6811992).

Almost surely, 2^49543813 is an apocalyptic number.

It is an amenable number.

49543813 is a deficient number, since it is larger than the sum of its proper divisors (4952123).

49543813 is an equidigital number, since it uses as much as digits as its factorization.

49543813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37256 (or 37234 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 49543813 is about 7038.7366053859. The cubic root of 49543813 is about 367.2793202079.

The spelling of 49543813 in words is "forty-nine million, five hundred forty-three thousand, eight hundred thirteen".