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3057 = 31019
BaseRepresentation
bin101111110001
311012020
4233301
544212
622053
711625
oct5761
94166
103057
11232a
121929
131512
141185
15d8c
hexbf1

3057 has 4 divisors (see below), whose sum is σ = 4080. Its totient is φ = 2036.

The previous prime is 3049. The next prime is 3061. The reversal of 3057 is 7503.

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.

It is a cyclic number.

It is not a de Polignac number, because 3057 - 23 = 3049 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (3037) 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, 507 + ... + 512.

It is an arithmetic number, because the mean of its divisors is an integer number (1020).

23057 is an apocalyptic number.

It is an amenable number.

3057 is a deficient number, since it is larger than the sum of its proper divisors (1023).

3057 is a wasteful number, since it uses less digits than its factorization.

3057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022.

The product of its (nonzero) digits is 105, while the sum is 15.

The square root of 3057 is about 55.2901437871. The cubic root of 3057 is about 14.5132657037.

The spelling of 3057 in words is "three thousand, fifty-seven".

Divisors: 1 3 1019 3057