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2512680521 = 13193283117
BaseRepresentation
bin1001010111000100…
…0111011001001001
320111010001101200112
42111301013121021
520121221234041
61053155244105
7116160301121
oct22561073111
96433041615
102512680521
11107a38507a
125a15a9635
1331074c110
1419b9d1c81
15ea8d2deb
hex95c47649

2512680521 has 4 divisors (see below), whose sum is σ = 2705963652. Its totient is φ = 2319397392.

The previous prime is 2512680509. The next prime is 2512680539. The reversal of 2512680521 is 1250862152.

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 717972025 + 1794708496 = 26795^2 + 42364^2 .

It is not a de Polignac number, because 2512680521 - 214 = 2512664137 is a prime.

It is a super-2 number, since 2×25126805212 = 12627126801225662882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2512680581) 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, 96641546 + ... + 96641571.

It is an arithmetic number, because the mean of its divisors is an integer number (676490913).

Almost surely, 22512680521 is an apocalyptic number.

It is an amenable number.

2512680521 is a deficient number, since it is larger than the sum of its proper divisors (193283131).

2512680521 is a wasteful number, since it uses less digits than its factorization.

2512680521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193283130.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 2512680521 is about 50126.6448208934. The cubic root of 2512680521 is about 1359.4996214641.

The spelling of 2512680521 in words is "two billion, five hundred twelve million, six hundred eighty thousand, five hundred twenty-one".

Divisors: 1 13 193283117 2512680521