49913731 has 4 divisors (see below), whose sum is σ = 57044272. Its totient is φ = 42783192.

The previous prime is 49913729. The next prime is 49913753. The reversal of 49913731 is 13731994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13731994 = 2 ⋅6865997.

It is a cyclic number.

It is not a de Polignac number, because 49913731 - 2¹ = 49913729 is a prime.

It is a super-2 number, since 2×49913731² = 4982761084680722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49913711) 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, 3565260 + ... + 3565273.

It is an arithmetic number, because the mean of its divisors is an integer number (14261068).

Almost surely, 2^49913731 is an apocalyptic number.

49913731 is a deficient number, since it is larger than the sum of its proper divisors (7130541).

49913731 is an equidigital number, since it uses as much as digits as its factorization.

49913731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7130540.

The product of its digits is 20412, while the sum is 37.

The square root of 49913731 is about 7064.9650388378. The cubic root of 49913731 is about 368.1911494146.

The spelling of 49913731 in words is "forty-nine million, nine hundred thirteen thousand, seven hundred thirty-one".