57538778 has 32 divisors (see below), whose sum is σ = 104042880. Its totient is φ = 23541760.

The previous prime is 57538777. The next prime is 57538823. The reversal of 57538778 is 87783575.

It is not an unprimeable number, because it can be changed into a prime (57538771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5258 + ... + 11946.

It is an arithmetic number, because the mean of its divisors is an integer number (3251340).

Almost surely, 2^57538778 is an apocalyptic number.

57538778 is a deficient number, since it is larger than the sum of its proper divisors (46504102).

57538778 is a wasteful number, since it uses less digits than its factorization.

57538778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6742.

The product of its digits is 1646400, while the sum is 50.

The square root of 57538778 is about 7585.4319586956. The cubic root of 57538778 is about 386.0588785054.

It can be divided in two parts, 57 and 538778, that added together give a palindrome (538835).

The spelling of 57538778 in words is "fifty-seven million, five hundred thirty-eight thousand, seven hundred seventy-eight".