7131565 has 16 divisors (see below), whose sum is σ = 10046592. Its totient is φ = 4757184.

The previous prime is 7131559. The next prime is 7131569. The reversal of 7131565 is 5651317.

It is a cyclic number.

It is not a de Polignac number, because 7131565 - 2⁵ = 7131533 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 (7131569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1459 + ... + 4048.

It is an arithmetic number, because the mean of its divisors is an integer number (627912).

Almost surely, 2^7131565 is an apocalyptic number.

It is an amenable number.

7131565 is a deficient number, since it is larger than the sum of its proper divisors (2915027).

7131565 is a wasteful number, since it uses less digits than its factorization.

7131565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5556.

The product of its digits is 3150, while the sum is 28.

The square root of 7131565 is about 2670.4990170378. The cubic root of 7131565 is about 192.4841387955.

It can be divided in two parts, 713 and 1565, that added together give a triangular number (2278 = T₆₇).

The spelling of 7131565 in words is "seven million, one hundred thirty-one thousand, five hundred sixty-five".