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531893 = 4112973
BaseRepresentation
bin10000001110110110101
31000000121202
42001312311
5114010033
615222245
74343465
oct2016665
91000552
10531893
1133368a
12217985
1315813b
14dbba5
15a78e8
hex81db5

531893 has 4 divisors (see below), whose sum is σ = 544908. Its totient is φ = 518880.

The previous prime is 531877. The next prime is 531901. The reversal of 531893 is 398135.

531893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 398135 = 579627.

It can be written as a sum of positive squares in 2 ways, for example, as 10609 + 521284 = 103^2 + 722^2 .

It is a cyclic number.

It is not a de Polignac number, because 531893 - 24 = 531877 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531823) 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, 6446 + ... + 6527.

It is an arithmetic number, because the mean of its divisors is an integer number (136227).

2531893 is an apocalyptic number.

It is an amenable number.

531893 is a deficient number, since it is larger than the sum of its proper divisors (13015).

531893 is a wasteful number, since it uses less digits than its factorization.

531893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13014.

The product of its digits is 3240, while the sum is 29.

The square root of 531893 is about 729.3099478274. The cubic root of 531893 is about 81.0229574717.

The spelling of 531893 in words is "five hundred thirty-one thousand, eight hundred ninety-three".

Divisors: 1 41 12973 531893