49903 has 4 divisors (see below), whose sum is σ = 57040. Its totient is φ = 42768.

The previous prime is 49891. The next prime is 49919. The reversal of 49903 is 30994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30994 = 2 ⋅15497.

It is a cyclic number.

It is not a de Polignac number, because 49903 - 2⁵ = 49871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49943) 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, 3558 + ... + 3571.

It is an arithmetic number, because the mean of its divisors is an integer number (14260).

2⁴⁹⁹⁰³ is an apocalyptic number.

49903 is a deficient number, since it is larger than the sum of its proper divisors (7137).

49903 is an equidigital number, since it uses as much as digits as its factorization.

49903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7136.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 49903 is about 223.3897938582. The cubic root of 49903 is about 36.8164761603.

The spelling of 49903 in words is "forty-nine thousand, nine hundred three".