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53889 = 3112371
BaseRepresentation
bin1101001010000001
32201220220
431022001
53211024
61053253
7313053
oct151201
981826
1053889
1137540
1227229
131b6b4
14158d3
1510e79
hexd281

53889 has 16 divisors (see below), whose sum is σ = 82944. Its totient is φ = 30800.

The previous prime is 53887. The next prime is 53891. The reversal of 53889 is 98835.

It is an interprime number because it is at equal distance from previous prime (53887) and next prime (53891).

It is not a de Polignac number, because 53889 - 21 = 53887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

Its product of digits (8640) is a multiple of the sum of its prime divisors (108).

It is not an unprimeable number, because it can be changed into a prime (53881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 724 + ... + 794.

It is an arithmetic number, because the mean of its divisors is an integer number (5184).

253889 is an apocalyptic number.

It is an amenable number.

53889 is a deficient number, since it is larger than the sum of its proper divisors (29055).

53889 is a wasteful number, since it uses less digits than its factorization.

53889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108.

The product of its digits is 8640, while the sum is 33.

The square root of 53889 is about 232.1400439390. The cubic root of 53889 is about 37.7717153542.

The spelling of 53889 in words is "fifty-three thousand, eight hundred eighty-nine".

Divisors: 1 3 11 23 33 69 71 213 253 759 781 1633 2343 4899 17963 53889