49557865 has 12 divisors (see below), whose sum is σ = 69179076. Its totient is φ = 33982368.

The previous prime is 49557863. The next prime is 49557869. The reversal of 49557865 is 56875594.

49557865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 37258816 + 12299049 = 6104^2 + 3507^2 .

It is not a de Polignac number, because 49557865 - 2¹ = 49557863 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 not an unprimeable number, because it can be changed into a prime (49557863) 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 11 ways as a sum of consecutive naturals, for example, 100894 + ... + 101383.

It is an arithmetic number, because the mean of its divisors is an integer number (5764923).

Almost surely, 2^49557865 is an apocalyptic number.

It is an amenable number.

49557865 is a deficient number, since it is larger than the sum of its proper divisors (19621211).

49557865 is a wasteful number, since it uses less digits than its factorization.

49557865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202296 (or 202289 counting only the distinct ones).

The product of its digits is 1512000, while the sum is 49.

The square root of 49557865 is about 7039.7347251157. The cubic root of 49557865 is about 367.3140404608.

The spelling of 49557865 in words is "forty-nine million, five hundred fifty-seven thousand, eight hundred sixty-five".