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252015 = 3553317
BaseRepresentation
bin111101100001101111
3110210200220
4331201233
531031030
65222423
72066511
oct754157
9423626
10252015
11162385
12101a13
138a92a
1467bb1
154ea10
hex3d86f

252015 has 16 divisors (see below), whose sum is σ = 412128. Its totient is φ = 131456.

The previous prime is 252013. The next prime is 252017. The reversal of 252015 is 510252.

252015 is nontrivially palindromic in base 2.

It is an interprime number because it is at equal distance from previous prime (252013) and next prime (252017).

It is a cyclic number.

It is not a de Polignac number, because 252015 - 21 = 252013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

252015 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 251985 and 252003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252013) 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, 637 + ... + 953.

It is an arithmetic number, because the mean of its divisors is an integer number (25758).

2252015 is an apocalyptic number.

252015 is a deficient number, since it is larger than the sum of its proper divisors (160113).

252015 is a wasteful number, since it uses less digits than its factorization.

252015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 252015 is about 502.0109560557. The cubic root of 252015 is about 63.1648491977.

Adding to 252015 its reverse (510252), we get a palindrome (762267).

The spelling of 252015 in words is "two hundred fifty-two thousand, fifteen".

Divisors: 1 3 5 15 53 159 265 317 795 951 1585 4755 16801 50403 84005 252015