49997543 has 4 divisors (see below), whose sum is σ = 50096280. Its totient is φ = 49898808.

The previous prime is 49997509. The next prime is 49997567. The reversal of 49997543 is 34579994.

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 49997543 - 2⁸ = 49997287 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49997491 and 49997500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49993543) 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, 48605 + ... + 49622.

It is an arithmetic number, because the mean of its divisors is an integer number (12524070).

Almost surely, 2^49997543 is an apocalyptic number.

49997543 is a deficient number, since it is larger than the sum of its proper divisors (98737).

49997543 is an equidigital number, since it uses as much as digits as its factorization.

49997543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98736.

The product of its digits is 1224720, while the sum is 50.

The square root of 49997543 is about 7070.8940735949. The cubic root of 49997543 is about 368.3971153216.

The spelling of 49997543 in words is "forty-nine million, nine hundred ninety-seven thousand, five hundred forty-three".