57749986 has 16 divisors (see below), whose sum is σ = 104823936. Its totient is φ = 23294016.

The previous prime is 57749983. The next prime is 57750001. The reversal of 57749986 is 68994775.

57749986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (57749983) 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 7 ways as a sum of consecutive naturals, for example, 121086 + ... + 121561.

It is an arithmetic number, because the mean of its divisors is an integer number (6551496).

Almost surely, 2^57749986 is an apocalyptic number.

57749986 is a deficient number, since it is larger than the sum of its proper divisors (47073950).

57749986 is a wasteful number, since it uses less digits than its factorization.

57749986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242673.

The product of its digits is 3810240, while the sum is 55.

The square root of 57749986 is about 7599.3411556529. The cubic root of 57749986 is about 386.5306713910.

The spelling of 57749986 in words is "fifty-seven million, seven hundred forty-nine thousand, nine hundred eighty-six".