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52500253 = 134038481
BaseRepresentation
bin1100100001000…
…1011100011101
310122210021210211
43020101130131
5101420002003
65113132421
71205146651
oct310213435
9118707724
1052500253
11276a9243
12156ba111
13ab52450
146d88a61
15492096d
hex321171d

52500253 has 4 divisors (see below), whose sum is σ = 56538748. Its totient is φ = 48461760.

The previous prime is 52500251. The next prime is 52500271. The reversal of 52500253 is 35200525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6775609 + 45724644 = 2603^2 + 6762^2 .

It is a cyclic number.

It is not a de Polignac number, because 52500253 - 21 = 52500251 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 (52500251) 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, 2019228 + ... + 2019253.

It is an arithmetic number, because the mean of its divisors is an integer number (14134687).

Almost surely, 252500253 is an apocalyptic number.

It is an amenable number.

52500253 is a deficient number, since it is larger than the sum of its proper divisors (4038495).

52500253 is a wasteful number, since it uses less digits than its factorization.

52500253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038494.

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 52500253 is about 7245.7058317323. The cubic root of 52500253 is about 374.4442208472. Note that the first 3 decimals are identical.

Adding to 52500253 its reverse (35200525), we get a palindrome (87700778).

The spelling of 52500253 in words is "fifty-two million, five hundred thousand, two hundred fifty-three".

Divisors: 1 13 4038481 52500253