57436 has 12 divisors (see below), whose sum is σ = 102312. Its totient is φ = 28208.

The previous prime is 57427. The next prime is 57457. The reversal of 57436 is 63475.

It is a self number, because there is not a number n which added to its sum of digits gives 57436.

It is a congruent number.

It is an unprimeable number.

57436 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246 + ... + 418.

It is an arithmetic number, because the mean of its divisors is an integer number (8526).

2⁵⁷⁴³⁶ is an apocalyptic number.

It is an amenable number.

57436 is a deficient number, since it is larger than the sum of its proper divisors (44876).

57436 is a wasteful number, since it uses less digits than its factorization.

57436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 258 counting only the distinct ones).

The product of its digits is 2520, while the sum is 25.

The square root of 57436 is about 239.6580897863. The cubic root of 57436 is about 38.5828877051.

The spelling of 57436 in words is "fifty-seven thousand, four hundred thirty-six".