49306561 has 4 divisors (see below), whose sum is σ = 49324500. Its totient is φ = 49288624.

The previous prime is 49306547. The next prime is 49306591. The reversal of 49306561 is 16560394.

49306561 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: 16560394 = 2 ⋅8280197.

It can be written as a sum of positive squares in 2 ways, for example, as 45144961 + 4161600 = 6719^2 + 2040^2 .

It is a cyclic number.

It is not a de Polignac number, because 49306561 - 2¹¹ = 49304513 is a prime.

It is a super-2 number, since 2×49306561² = 4862273915293442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49306531) 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, 3886 + ... + 10663.

It is an arithmetic number, because the mean of its divisors is an integer number (12331125).

Almost surely, 2^49306561 is an apocalyptic number.

It is an amenable number.

49306561 is a deficient number, since it is larger than the sum of its proper divisors (17939).

49306561 is a wasteful number, since it uses less digits than its factorization.

49306561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17938.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 49306561 is about 7021.8630718635. The cubic root of 49306561 is about 366.6921145791.

The spelling of 49306561 in words is "forty-nine million, three hundred six thousand, five hundred sixty-one".