49287817 has 4 divisors (see below), whose sum is σ = 50095876. Its totient is φ = 48479760.

The previous prime is 49287803. The next prime is 49287851. The reversal of 49287817 is 71878294.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9585216 + 39702601 = 3096^2 + 6301^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49287817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49287857) 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, 403938 + ... + 404059.

It is an arithmetic number, because the mean of its divisors is an integer number (12523969).

Almost surely, 2^49287817 is an apocalyptic number.

It is an amenable number.

49287817 is a deficient number, since it is larger than the sum of its proper divisors (808059).

49287817 is an equidigital number, since it uses as much as digits as its factorization.

49287817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808058.

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

The square root of 49287817 is about 7020.5282564776. The cubic root of 49287817 is about 366.6456424125.

The spelling of 49287817 in words is "forty-nine million, two hundred eighty-seven thousand, eight hundred seventeen".