57228785 has 8 divisors (see below), whose sum is σ = 69544320. Its totient is φ = 45203184.

The previous prime is 57228763. The next prime is 57228793. The reversal of 57228785 is 58782275.

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

It is a cyclic number.

It is not a de Polignac number, because 57228785 - 2¹⁰ = 57227761 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72047 + ... + 72836.

It is an arithmetic number, because the mean of its divisors is an integer number (8693040).

Almost surely, 2^57228785 is an apocalyptic number.

It is an amenable number.

57228785 is a deficient number, since it is larger than the sum of its proper divisors (12315535).

57228785 is a wasteful number, since it uses less digits than its factorization.

57228785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144967.

The product of its digits is 313600, while the sum is 44.

The square root of 57228785 is about 7564.9709186487. The cubic root of 57228785 is about 385.3643259562.

The spelling of 57228785 in words is "fifty-seven million, two hundred twenty-eight thousand, seven hundred eighty-five".