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6560232121 = 31211620391
BaseRepresentation
bin1100001110000010…
…10011001010111001
3121221012020022200001
412013001103022321
5101413404411441
63002544313001
7321366024112
oct60701231271
917835208601
106560232121
112867097543
121331012761
1380717c671
144633a3209
15285dec731
hex1870532b9

6560232121 has 4 divisors (see below), whose sum is σ = 6771852544. Its totient is φ = 6348611700.

The previous prime is 6560232113. The next prime is 6560232143. The reversal of 6560232121 is 1212320656.

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 6560232121 - 23 = 6560232113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6560232121.

It is not an unprimeable number, because it can be changed into a prime (6560232821) 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, 105810165 + ... + 105810226.

It is an arithmetic number, because the mean of its divisors is an integer number (1692963136).

Almost surely, 26560232121 is an apocalyptic number.

It is an amenable number.

6560232121 is a deficient number, since it is larger than the sum of its proper divisors (211620423).

6560232121 is a wasteful number, since it uses less digits than its factorization.

6560232121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211620422.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 6560232121 is about 80995.2598674762. The cubic root of 6560232121 is about 1872.0024039382.

Adding to 6560232121 its reverse (1212320656), we get a palindrome (7772552777).

The spelling of 6560232121 in words is "six billion, five hundred sixty million, two hundred thirty-two thousand, one hundred twenty-one".

Divisors: 1 31 211620391 6560232121