49563781 has 8 divisors (see below), whose sum is σ = 52568064. Its totient is φ = 46630320.

The previous prime is 49563779. The next prime is 49563817. The reversal of 49563781 is 18736594.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49563781 - 2¹ = 49563779 is a prime.

It is a super-2 number, since 2×49563781² = 4913136774031922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49561781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16261 + ... + 19066.

It is an arithmetic number, because the mean of its divisors is an integer number (6571008).

Almost surely, 2^49563781 is an apocalyptic number.

It is an amenable number.

49563781 is a deficient number, since it is larger than the sum of its proper divisors (3004283).

49563781 is a wasteful number, since it uses less digits than its factorization.

49563781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35411.

The product of its digits is 181440, while the sum is 43.

The square root of 49563781 is about 7040.1548988641. The cubic root of 49563781 is about 367.3286559908.

The spelling of 49563781 in words is "forty-nine million, five hundred sixty-three thousand, seven hundred eighty-one".