49427681 has 4 divisors (see below), whose sum is σ = 49463700. Its totient is φ = 49391664.

The previous prime is 49427647. The next prime is 49427689. The reversal of 49427681 is 18672494.

49427681 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.

It can be written as a sum of positive squares in 2 ways, for example, as 1000000 + 48427681 = 1000^2 + 6959^2 .

It is a cyclic number.

It is not a de Polignac number, because 49427681 - 2⁶ = 49427617 is a prime.

It is a super-2 number, since 2×49427681² = 4886191298075522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49427689) 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, 15866 + ... + 18723.

It is an arithmetic number, because the mean of its divisors is an integer number (12365925).

Almost surely, 2^49427681 is an apocalyptic number.

It is an amenable number.

49427681 is a deficient number, since it is larger than the sum of its proper divisors (36019).

49427681 is a wasteful number, since it uses less digits than its factorization.

49427681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36018.

The product of its digits is 96768, while the sum is 41.

The square root of 49427681 is about 7030.4822736424. The cubic root of 49427681 is about 366.9921248994.

The spelling of 49427681 in words is "forty-nine million, four hundred twenty-seven thousand, six hundred eighty-one".