5661269 has 4 divisors (see below), whose sum is σ = 5690796. Its totient is φ = 5631744.

The previous prime is 5661247. The next prime is 5661277. The reversal of 5661269 is 9621665.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3020644 + 2640625 = 1738^2 + 1625^2 .

It is a cyclic number.

It is not a de Polignac number, because 5661269 - 2¹² = 5657173 is a prime.

It is a super-2 number, since 2×5661269² = 64099933380722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661209) 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 3 ways as a sum of consecutive naturals, for example, 14474 + ... + 14859.

It is an arithmetic number, because the mean of its divisors is an integer number (1422699).

Almost surely, 2^5661269 is an apocalyptic number.

It is an amenable number.

5661269 is a deficient number, since it is larger than the sum of its proper divisors (29527).

5661269 is a wasteful number, since it uses less digits than its factorization.

5661269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29526.

The product of its digits is 19440, while the sum is 35.

The square root of 5661269 is about 2379.3421359695. The cubic root of 5661269 is about 178.2260835510.

The spelling of 5661269 in words is "five million, six hundred sixty-one thousand, two hundred sixty-nine".