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BaseRepresentation
bin1101101110001001
32212002112
431232021
53244301
61112105
7322565
oct155611
985075
1056201
1139252
1228635
131c772
14166a5
15119bb
hexdb89

56201 has 4 divisors (see below), whose sum is σ = 57552. Its totient is φ = 54852.

The previous prime is 56197. The next prime is 56207. The reversal of 56201 is 10265.

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: 10265 = 52053.

It is a cyclic number.

It is not a de Polignac number, because 56201 - 22 = 56197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (56207) 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, 611 + ... + 696.

It is an arithmetic number, because the mean of its divisors is an integer number (14388).

256201 is an apocalyptic number.

It is an amenable number.

56201 is a deficient number, since it is larger than the sum of its proper divisors (1351).

56201 is a wasteful number, since it uses less digits than its factorization.

56201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 56201 is about 237.0675009359. The cubic root of 56201 is about 38.3043427099.

Adding to 56201 its reverse (10265), we get a palindrome (66466).

The spelling of 56201 in words is "fifty-six thousand, two hundred one".

Divisors: 1 43 1307 56201