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52831 = 232297
BaseRepresentation
bin1100111001011111
32200110201
430321133
53142311
61044331
7310012
oct147137
980421
1052831
1136769
12266a7
131b07c
1415379
15109c1
hexce5f

52831 has 4 divisors (see below), whose sum is σ = 55152. Its totient is φ = 50512.

The previous prime is 52817. The next prime is 52837. The reversal of 52831 is 13825.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52831 - 215 = 20063 is a prime.

It is a super-2 number, since 2×528312 = 5582229122, which contains 22 as substring.

It is a Duffinian number.

52831 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 52799 and 52808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52837) 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, 1126 + ... + 1171.

It is an arithmetic number, because the mean of its divisors is an integer number (13788).

252831 is an apocalyptic number.

52831 is a deficient number, since it is larger than the sum of its proper divisors (2321).

52831 is a wasteful number, since it uses less digits than its factorization.

52831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320.

The product of its digits is 240, while the sum is 19.

The square root of 52831 is about 229.8499510550. The cubic root of 52831 is about 37.5228897291.

The spelling of 52831 in words is "fifty-two thousand, eight hundred thirty-one".

Divisors: 1 23 2297 52831