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525013297 = 1997262901
BaseRepresentation
bin11111010010110…
…001000100110001
31100120220102211221
4133102301010301
52033400411142
6124032505041
716003353004
oct3722610461
91316812757
10525013297
1124a3a1296
121279ab181
1384a02373
144da2753b
1531159767
hex1f4b1131

525013297 has 4 divisors (see below), whose sum is σ = 525278196. Its totient is φ = 524748400.

The previous prime is 525013289. The next prime is 525013309. The reversal of 525013297 is 792310525.

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 150822961 + 374190336 = 12281^2 + 19344^2 .

It is a cyclic number.

It is not a de Polignac number, because 525013297 - 23 = 525013289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525013267) 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, 129454 + ... + 133447.

It is an arithmetic number, because the mean of its divisors is an integer number (131319549).

Almost surely, 2525013297 is an apocalyptic number.

It is an amenable number.

525013297 is a deficient number, since it is larger than the sum of its proper divisors (264899).

525013297 is a wasteful number, since it uses less digits than its factorization.

525013297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264898.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 525013297 is about 22913.1686372706. The cubic root of 525013297 is about 806.7211336725.

The spelling of 525013297 in words is "five hundred twenty-five million, thirteen thousand, two hundred ninety-seven".

Divisors: 1 1997 262901 525013297