2291522 has 8 divisors (see below), whose sum is σ = 3555900. Its totient is φ = 1106224.

The previous prime is 2291491. The next prime is 2291539. The reversal of 2291522 is 2251922.

2291522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2247001 + 44521 = 1499^2 + 211^2 .

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

It is an unprimeable number.

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, 19697 + ... + 19812.

2^2291522 is an apocalyptic number.

2291522 is a deficient number, since it is larger than the sum of its proper divisors (1264378).

2291522 is a wasteful number, since it uses less digits than its factorization.

2291522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39540.

The product of its digits is 720, while the sum is 23.

The square root of 2291522 is about 1513.7773944672. Note that the first 3 decimals coincide. The cubic root of 2291522 is about 131.8382239118.

The spelling of 2291522 in words is "two million, two hundred ninety-one thousand, five hundred twenty-two".