49776161 has 4 divisors (see below), whose sum is σ = 50216772. Its totient is φ = 49335552.

The previous prime is 49776157. The next prime is 49776193. The reversal of 49776161 is 16167794.

49776161 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: 16167794 = 2 ⋅8083897.

It can be written as a sum of positive squares in 2 ways, for example, as 776161 + 49000000 = 881^2 + 7000^2 .

It is a cyclic number.

It is not a de Polignac number, because 49776161 - 2² = 49776157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49776361) 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, 220136 + ... + 220361.

It is an arithmetic number, because the mean of its divisors is an integer number (12554193).

Almost surely, 2^49776161 is an apocalyptic number.

It is an amenable number.

49776161 is a deficient number, since it is larger than the sum of its proper divisors (440611).

49776161 is a wasteful number, since it uses less digits than its factorization.

49776161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440610.

The product of its digits is 63504, while the sum is 41.

The square root of 49776161 is about 7055.2222502200. Note that the first 4 decimals coincide. The cubic root of 49776161 is about 367.8525741583.

It can be divided in two parts, 49 and 776161, that multiplied together give a square (38031889 = 6167²).

The spelling of 49776161 in words is "forty-nine million, seven hundred seventy-six thousand, one hundred sixty-one".