7164561 has 4 divisors (see below), whose sum is σ = 9552752. Its totient is φ = 4776372.

The previous prime is 7164559. The next prime is 7164571. The reversal of 7164561 is 1654617.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1654617 = 3 ⋅551539.

It is not a de Polignac number, because 7164561 - 2¹ = 7164559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7164541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1194091 + ... + 1194096.

It is an arithmetic number, because the mean of its divisors is an integer number (2388188).

Almost surely, 2^7164561 is an apocalyptic number.

It is an amenable number.

7164561 is a deficient number, since it is larger than the sum of its proper divisors (2388191).

7164561 is a wasteful number, since it uses less digits than its factorization.

7164561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388190.

The product of its digits is 5040, while the sum is 30.

The square root of 7164561 is about 2676.6697592344. The cubic root of 7164561 is about 192.7805410852.

The spelling of 7164561 in words is "seven million, one hundred sixty-four thousand, five hundred sixty-one".