[go: up one dir, main page]

Search a number
-
+
52815 = 357503
BaseRepresentation
bin1100111001001111
32200110010
430321033
53142230
61044303
7306660
oct147117
980403
1052815
1136754
1226693
131b069
1415367
15109b0
hexce4f

52815 has 16 divisors (see below), whose sum is σ = 96768. Its totient is φ = 24096.

The previous prime is 52813. The next prime is 52817. The reversal of 52815 is 51825.

It is an interprime number because it is at equal distance from previous prime (52813) and next prime (52817).

It is not a de Polignac number, because 52815 - 21 = 52813 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 52791 and 52800.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 52815.

It is not an unprimeable number, because it can be changed into a prime (52813) 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, 147 + ... + 356.

It is an arithmetic number, because the mean of its divisors is an integer number (6048).

252815 is an apocalyptic number.

52815 is a deficient number, since it is larger than the sum of its proper divisors (43953).

52815 is a wasteful number, since it uses less digits than its factorization.

52815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518.

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

The square root of 52815 is about 229.8151431042. The cubic root of 52815 is about 37.5191013798.

Subtracting from 52815 its reverse (51825), we obtain a triangular number (990 = T44).

The spelling of 52815 in words is "fifty-two thousand, eight hundred fifteen".

Divisors: 1 3 5 7 15 21 35 105 503 1509 2515 3521 7545 10563 17605 52815