49561816 has 16 divisors (see below), whose sum is σ = 93075840. Its totient is φ = 24741600.

The previous prime is 49561793. The next prime is 49561819. The reversal of 49561816 is 61816594.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49561819) 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 3 ways as a sum of consecutive naturals, for example, 841 + ... + 9991.

It is an arithmetic number, because the mean of its divisors is an integer number (5817240).

Almost surely, 2^49561816 is an apocalyptic number.

It is an amenable number.

49561816 is a deficient number, since it is larger than the sum of its proper divisors (43514024).

49561816 is a wasteful number, since it uses less digits than its factorization.

49561816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9834 (or 9830 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The square root of 49561816 is about 7040.0153408924. The cubic root of 49561816 is about 367.3238015700.

The spelling of 49561816 in words is "forty-nine million, five hundred sixty-one thousand, eight hundred sixteen".