Search a number
-
+
56057 = 291933
BaseRepresentation
bin1101101011111001
32211220012
431223321
53243212
61111305
7322301
oct155371
984805
1056057
1139131
1228535
131c691
1416601
1511922
hexdaf9

56057 has 4 divisors (see below), whose sum is σ = 58020. Its totient is φ = 54096.

The previous prime is 56053. The next prime is 56081. The reversal of 56057 is 75065.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75065 = 515013.

It can be written as a sum of positive squares in 2 ways, for example, as 33856 + 22201 = 184^2 + 149^2 .

It is a cyclic number.

It is not a de Polignac number, because 56057 - 22 = 56053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 938 + ... + 995.

It is an arithmetic number, because the mean of its divisors is an integer number (14505).

256057 is an apocalyptic number.

It is an amenable number.

56057 is a deficient number, since it is larger than the sum of its proper divisors (1963).

56057 is a wasteful number, since it uses less digits than its factorization.

56057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 56057 is about 236.7635951746. The cubic root of 56057 is about 38.2715998583.

The spelling of 56057 in words is "fifty-six thousand, fifty-seven".

Divisors: 1 29 1933 56057