57285819 has 16 divisors (see below), whose sum is σ = 85696000. Its totient is φ = 37817928.

The previous prime is 57285791. The next prime is 57285841. The reversal of 57285819 is 91858275.

It is a happy number.

It is not a de Polignac number, because 57285819 - 2⁷ = 57285691 is a prime.

It is a super-2 number, since 2×57285819² = 6563330117001522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57287819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7519 + ... + 13080.

It is an arithmetic number, because the mean of its divisors is an integer number (5356000).

Almost surely, 2^57285819 is an apocalyptic number.

57285819 is a deficient number, since it is larger than the sum of its proper divisors (28410181).

57285819 is a wasteful number, since it uses less digits than its factorization.

57285819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20711 (or 20705 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 57285819 is about 7568.7395912397. The cubic root of 57285819 is about 385.4923010166.

The spelling of 57285819 in words is "fifty-seven million, two hundred eighty-five thousand, eight hundred nineteen".