2522161 has 8 divisors (see below), whose sum is σ = 2605824. Its totient is φ = 2439840.

The previous prime is 2522147. The next prime is 2522189. The reversal of 2522161 is 1612252.

2522161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2522161 - 2¹⁷ = 2391089 is a prime.

It is a super-2 number, since 2×2522161² = 12722592219842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2522461) 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 7 ways as a sum of consecutive naturals, for example, 4581 + ... + 5101.

It is an arithmetic number, because the mean of its divisors is an integer number (325728).

2^2522161 is an apocalyptic number.

It is an amenable number.

2522161 is a deficient number, since it is larger than the sum of its proper divisors (83663).

2522161 is a wasteful number, since it uses less digits than its factorization.

2522161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671.

The product of its digits is 240, while the sum is 19.

The square root of 2522161 is about 1588.1312918018. The cubic root of 2522161 is about 136.1207297320.

Subtracting from 2522161 its reverse (1612252), we obtain a palindrome (909909).

The spelling of 2522161 in words is "two million, five hundred twenty-two thousand, one hundred sixty-one".