49405543 has 4 divisors (see below), whose sum is σ = 53896968. Its totient is φ = 44914120.

The previous prime is 49405511. The next prime is 49405549. The reversal of 49405543 is 34550494.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 49405543 - 2⁵ = 49405511 is a prime.

It is a Duffinian number.

It is the 63-rd Perrin number.

It is a junction number, because it is equal to n+sod(n) for n = 49405499 and 49405508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49405549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2245696 + ... + 2245717.

It is an arithmetic number, because the mean of its divisors is an integer number (13474242).

Almost surely, 2^49405543 is an apocalyptic number.

49405543 is a deficient number, since it is larger than the sum of its proper divisors (4491425).

49405543 is a wasteful number, since it uses less digits than its factorization.

49405543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4491424.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 49405543 is about 7028.9076676252. The cubic root of 49405543 is about 366.9373264225.

The spelling of 49405543 in words is "forty-nine million, four hundred five thousand, five hundred forty-three".