7523161 has 8 divisors (see below), whose sum is σ = 7674984. Its totient is φ = 7372800.

The previous prime is 7523147. The next prime is 7523177. The reversal of 7523161 is 1613257.

It can be written as a sum of positive squares in 4 ways, for example, as 5973136 + 1550025 = 2444^2 + 1245^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 5-Lehmer number, since φ(7523161) divides (7523161-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 7523161 - 2¹¹ = 7521113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7523101) 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 7 ways as a sum of consecutive naturals, for example, 18561 + ... + 18961.

It is an arithmetic number, because the mean of its divisors is an integer number (959373).

Almost surely, 2^7523161 is an apocalyptic number.

It is an amenable number.

7523161 is a deficient number, since it is larger than the sum of its proper divisors (151823).

7523161 is a wasteful number, since it uses less digits than its factorization.

7523161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731.

The product of its digits is 1260, while the sum is 25.

The square root of 7523161 is about 2742.8381286543. The cubic root of 7523161 is about 195.9446688879.

The spelling of 7523161 in words is "seven million, five hundred twenty-three thousand, one hundred sixty-one".