49997 has 6 divisors (see below), whose sum is σ = 53418. Its totient is φ = 46784.

The previous prime is 49993. The next prime is 49999. The reversal of 49997 is 79994.

49997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 32041 + 17956 = 179^2 + 134^2 .

It is not a de Polignac number, because 49997 - 2² = 49993 is a prime.

It is a fibodiv number, since the Fibonacci-like sequence with seeds 4 and 9997 contains 49997 itself.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a nialpdrome in base 9 and base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 49997.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 49997.

It is not an unprimeable number, because it can be changed into a prime (49991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203 + ... + 375.

It is an arithmetic number, because the mean of its divisors is an integer number (8903).

2⁴⁹⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

49997 is a deficient number, since it is larger than the sum of its proper divisors (3421).

49997 is a wasteful number, since it uses less digits than its factorization.

49997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 190 counting only the distinct ones).

The product of its digits is 20412, while the sum is 38.

The square root of 49997 is about 223.6000894454. The cubic root of 49997 is about 36.8395781654.

It can be divided in two parts, 4 and 9997, that added together give a palindrome (10001).

The spelling of 49997 in words is "forty-nine thousand, nine hundred ninety-seven".