49812787 has 4 divisors (see below), whose sum is σ = 49893880. Its totient is φ = 49731696.

The previous prime is 49812769. The next prime is 49812793. The reversal of 49812787 is 78721894.

49812787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78721894 = 2 ⋅39360947.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49812787 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49812797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39618 + ... + 40855.

It is an arithmetic number, because the mean of its divisors is an integer number (12473470).

Almost surely, 2^49812787 is an apocalyptic number.

49812787 is a deficient number, since it is larger than the sum of its proper divisors (81093).

49812787 is an equidigital number, since it uses as much as digits as its factorization.

49812787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81092.

The product of its digits is 225792, while the sum is 46.

The square root of 49812787 is about 7057.8174388404. The cubic root of 49812787 is about 367.9427757389.

The spelling of 49812787 in words is "forty-nine million, eight hundred twelve thousand, seven hundred eighty-seven".