57748778 has 8 divisors (see below), whose sum is σ = 86665572. Its totient is φ = 28860256.

The previous prime is 57748741. The next prime is 57748783. The reversal of 57748778 is 87784775.

It is a happy number.

57748778 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 56896849 + 851929 = 7543^2 + 923^2 .

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, 875 + ... + 10782.

Almost surely, 2^57748778 is an apocalyptic number.

57748778 is a deficient number, since it is larger than the sum of its proper divisors (28916794).

57748778 is a wasteful number, since it uses less digits than its factorization.

57748778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14136.

The product of its digits is 3073280, while the sum is 53.

The square root of 57748778 is about 7599.2616746629. The cubic root of 57748778 is about 386.5279762544.

The spelling of 57748778 in words is "fifty-seven million, seven hundred forty-eight thousand, seven hundred seventy-eight".