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52487 = 73719
BaseRepresentation
bin1100110100000111
32122222222
430310013
53134422
61042555
7306011
oct146407
978888
1052487
1136486
122645b
131ab76
14151b1
1510842
hexcd07

52487 has 4 divisors (see below), whose sum is σ = 53280. Its totient is φ = 51696.

The previous prime is 52457. The next prime is 52489. The reversal of 52487 is 78425.

52487 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-52487 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52489) by changing a digit.

Being equal to 8×38-1, it is a generalized Woodall number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287 + ... + 432.

It is an arithmetic number, because the mean of its divisors is an integer number (13320).

252487 is an apocalyptic number.

52487 is a deficient number, since it is larger than the sum of its proper divisors (793).

52487 is an equidigital number, since it uses as much as digits as its factorization.

52487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792.

The product of its digits is 2240, while the sum is 26.

The square root of 52487 is about 229.1004146657. The cubic root of 52487 is about 37.4412710352.

The spelling of 52487 in words is "fifty-two thousand, four hundred eighty-seven".

Divisors: 1 73 719 52487