7131569 has 2 divisors, whose sum is σ = 7131570. Its totient is φ = 7131568.

The previous prime is 7131559. The next prime is 7131577. The reversal of 7131569 is 9651317.

7131569 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7091569 + 40000 = 2663^2 + 200^2 .

It is a cyclic number.

It is not a de Polignac number, because 7131569 - 2¹² = 7127473 is a prime.

It is a super-2 number, since 2×7131569² = 101718552803522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7131559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3565784 + 3565785.

It is an arithmetic number, because the mean of its divisors is an integer number (3565785).

Almost surely, 2^7131569 is an apocalyptic number.

It is an amenable number.

7131569 is a deficient number, since it is larger than the sum of its proper divisors (1).

7131569 is an equidigital number, since it uses as much as digits as its factorization.

7131569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 32.

The square root of 7131569 is about 2670.4997659614. The cubic root of 7131569 is about 192.4841747827.

The spelling of 7131569 in words is "seven million, one hundred thirty-one thousand, five hundred sixty-nine".