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12570133 = 97129589
BaseRepresentation
bin101111111100…
…111000010101
3212122121222111
4233330320111
511204221013
61125231021
7211562422
oct57747025
925577874
1012570133
117106144
124262471
1327b1664
141952d49
15118473d
hexbfce15

12570133 has 4 divisors (see below), whose sum is σ = 12699820. Its totient is φ = 12440448.

The previous prime is 12570119. The next prime is 12570139. The reversal of 12570133 is 33107521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33107521 = 151121911.

It can be written as a sum of positive squares in 2 ways, for example, as 4235364 + 8334769 = 2058^2 + 2887^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12570133 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 (12570139) 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, 64698 + ... + 64891.

It is an arithmetic number, because the mean of its divisors is an integer number (3174955).

Almost surely, 212570133 is an apocalyptic number.

It is an amenable number.

12570133 is a deficient number, since it is larger than the sum of its proper divisors (129687).

12570133 is an equidigital number, since it uses as much as digits as its factorization.

12570133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129686.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 12570133 is about 3545.4383367928. The cubic root of 12570133 is about 232.5126705239.

Adding to 12570133 its reverse (33107521), we get a palindrome (45677654).

The spelling of 12570133 in words is "twelve million, five hundred seventy thousand, one hundred thirty-three".

Divisors: 1 97 129589 12570133