57049786 has 8 divisors (see below), whose sum is σ = 88525620. Its totient is φ = 27541248.

The previous prime is 57049753. The next prime is 57049787. The reversal of 57049786 is 68794075.

It is a happy number.

57049786 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 52345225 + 4704561 = 7235^2 + 2169^2 .

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

It is not an unprimeable number, because it can be changed into a prime (57049787) 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 3 ways as a sum of consecutive naturals, for example, 491751 + ... + 491866.

Almost surely, 2^57049786 is an apocalyptic number.

57049786 is a deficient number, since it is larger than the sum of its proper divisors (31475834).

57049786 is a wasteful number, since it uses less digits than its factorization.

57049786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983648.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 57049786 is about 7553.1308740151. The cubic root of 57049786 is about 384.9621281688.

The spelling of 57049786 in words is "fifty-seven million, forty-nine thousand, seven hundred eighty-six".