49521986 has 8 divisors (see below), whose sum is σ = 78652620. Its totient is φ = 23304448.

The previous prime is 49521929. The next prime is 49521991. The reversal of 49521986 is 68912594.

49521986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 49434961 + 87025 = 7031^2 + 295^2 .

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

It is an unprimeable number.

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, 728231 + ... + 728298.

Almost surely, 2^49521986 is an apocalyptic number.

49521986 is a deficient number, since it is larger than the sum of its proper divisors (29130634).

49521986 is a wasteful number, since it uses less digits than its factorization.

49521986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456548.

The product of its digits is 155520, while the sum is 44.

The square root of 49521986 is about 7037.1859432589. The cubic root of 49521986 is about 367.2253761478.

The spelling of 49521986 in words is "forty-nine million, five hundred twenty-one thousand, nine hundred eighty-six".