49547581 has 2 divisors, whose sum is σ = 49547582. Its totient is φ = 49547580.

The previous prime is 49547549. The next prime is 49547591. The reversal of 49547581 is 18574594.

49547581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45010681 + 4536900 = 6709^2 + 2130^2 .

It is a cyclic number.

It is not a de Polignac number, because 49547581 - 2⁵ = 49547549 is a prime.

It is a super-2 number, since 2×49547581² = 4909925565903122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49547591) 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 as a sum of consecutive naturals, namely, 24773790 + 24773791.

It is an arithmetic number, because the mean of its divisors is an integer number (24773791).

Almost surely, 2^49547581 is an apocalyptic number.

It is an amenable number.

49547581 is a deficient number, since it is larger than the sum of its proper divisors (1).

49547581 is an equidigital number, since it uses as much as digits as its factorization.

49547581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 43.

The square root of 49547581 is about 7039.0042619677. The cubic root of 49547581 is about 367.2886309796.

The spelling of 49547581 in words is "forty-nine million, five hundred forty-seven thousand, five hundred eighty-one".