1522161 has 6 divisors (see below), whose sum is σ = 2198690. Its totient is φ = 1014768.

The previous prime is 1522159. The next prime is 1522187. The reversal of 1522161 is 1612251.

It can be written as a sum of positive squares in only one way, i.e., 950625 + 571536 = 975^2 + 756^2 .

It is not a de Polignac number, because 1522161 - 2¹ = 1522159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1522111) 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 5 ways as a sum of consecutive naturals, for example, 84556 + ... + 84573.

2^1522161 is an apocalyptic number.

It is an amenable number.

1522161 is a deficient number, since it is larger than the sum of its proper divisors (676529).

1522161 is a wasteful number, since it uses less digits than its factorization.

1522161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169135 (or 169132 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 1522161 is about 1233.7588905455. The cubic root of 1522161 is about 115.0324042270.

The spelling of 1522161 in words is "one million, five hundred twenty-two thousand, one hundred sixty-one".