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52185 = 357271
BaseRepresentation
bin1100101111011001
32122120210
430233121
53132220
61041333
7305100
oct145731
978523
1052185
1136231
1226249
131a9a3
1415037
15106e0
hexcbd9

52185 has 24 divisors (see below), whose sum is σ = 98496. Its totient is φ = 23520.

The previous prime is 52183. The next prime is 52189. The reversal of 52185 is 58125.

52185 divided by its sum of digits (21) gives a triangular number (2485 = T70).

It can be divided in two parts, 521 and 85, that added together give a palindrome (606).

It is not a de Polignac number, because 52185 - 21 = 52183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an alternating number because its digits alternate between odd and even.

52185 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (52181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 700 + ... + 770.

It is an arithmetic number, because the mean of its divisors is an integer number (4104).

252185 is an apocalyptic number.

It is an amenable number.

52185 is a deficient number, since it is larger than the sum of its proper divisors (46311).

52185 is a wasteful number, since it uses less digits than its factorization.

52185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 86 counting only the distinct ones).

The product of its digits is 400, while the sum is 21.

The square root of 52185 is about 228.4403642091. The cubic root of 52185 is about 37.3693229335.

The spelling of 52185 in words is "fifty-two thousand, one hundred eighty-five".

Divisors: 1 3 5 7 15 21 35 49 71 105 147 213 245 355 497 735 1065 1491 2485 3479 7455 10437 17395 52185