9057 has 4 divisors (see below), whose sum is σ = 12080.
Its totient is φ = 6036.
The previous prime is 9049. The next prime is 9059. The reversal of 9057 is 7509.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7509 = 3 ⋅2503.
It is not a de Polignac number, because 9057 - 23 = 9049 is a prime.
It is a D-number.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (9059) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1507 + ... + 1512.
It is an arithmetic number, because the mean of its divisors is an integer number (3020).
29057 is an apocalyptic number.
It is an amenable number.
9057 is a deficient number, since it is larger than the sum of its proper divisors (3023).
9057 is a wasteful number, since it uses less digits than its factorization.
9057 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3022.
The product of its (nonzero) digits is 315, while the sum is 21.
The square root of 9057 is about 95.1682720238.
The cubic root of 9057 is about 20.8446587311.
The spelling of 9057 in words is "nine thousand, fifty-seven".