2113569 has 12 divisors (see below), whose sum is σ = 3095716. Its totient is φ = 1389312.

The previous prime is 2113567. The next prime is 2113583. The reversal of 2113569 is 9653112.

It can be written as a sum of positive squares in 2 ways, for example, as 1595169 + 518400 = 1263^2 + 720^2 .

It is not a de Polignac number, because 2113569 - 2¹ = 2113567 is a prime.

It is a super-2 number, since 2×2113569² = 8934347835522, which contains 22 as substring.

It is a Duffinian number.

2113569 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2113567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 952 + ... + 2265.

2^2113569 is an apocalyptic number.

It is an amenable number.

2113569 is a deficient number, since it is larger than the sum of its proper divisors (982147).

2113569 is a wasteful number, since it uses less digits than its factorization.

2113569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3296 (or 3293 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 2113569 is about 1453.8118860430. The cubic root of 2113569 is about 128.3331369349. Note that the first 3 decimals are identical.

The spelling of 2113569 in words is "two million, one hundred thirteen thousand, five hundred sixty-nine".