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52015253 = 131397063
BaseRepresentation
bin1100011001101…
…1000010010101
310121212122111212
43012123002111
5101303442003
65054511205
71201056653
oct306330225
9117778455
1052015253
11273a7914
1215505505
13aa12774
146c9ddd3
154876dd8
hex319b095

52015253 has 4 divisors (see below), whose sum is σ = 52412448. Its totient is φ = 51618060.

The previous prime is 52015247. The next prime is 52015297. The reversal of 52015253 is 35251025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52015253 - 28 = 52014997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52015553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198401 + ... + 198662.

It is an arithmetic number, because the mean of its divisors is an integer number (13103112).

Almost surely, 252015253 is an apocalyptic number.

It is an amenable number.

52015253 is a deficient number, since it is larger than the sum of its proper divisors (397195).

52015253 is a wasteful number, since it uses less digits than its factorization.

52015253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397194.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 52015253 is about 7212.1600786450. The cubic root of 52015253 is about 373.2876069811.

Adding to 52015253 its reverse (35251025), we get a palindrome (87266278).

The spelling of 52015253 in words is "fifty-two million, fifteen thousand, two hundred fifty-three".

Divisors: 1 131 397063 52015253