49857745 has 24 divisors (see below), whose sum is σ = 70018344. Its totient is φ = 33981696.

The previous prime is 49857739. The next prime is 49857751. The reversal of 49857745 is 54775894.

49857745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (49857739) and next prime (49857751).

It can be written as a sum of positive squares in 4 ways, for example, as 32626944 + 17230801 = 5712^2 + 4151^2 .

It is not a de Polignac number, because 49857745 - 2³ = 49857737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 47749 + ... + 48781.

It is an arithmetic number, because the mean of its divisors is an integer number (2917431).

Almost surely, 2^49857745 is an apocalyptic number.

It is an amenable number.

49857745 is a deficient number, since it is larger than the sum of its proper divisors (20160599).

49857745 is a wasteful number, since it uses less digits than its factorization.

49857745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249 (or 1242 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 49.

The square root of 49857745 is about 7061.0016994758. The cubic root of 49857745 is about 368.0534367305.

The spelling of 49857745 in words is "forty-nine million, eight hundred fifty-seven thousand, seven hundred forty-five".