56306869 has 4 divisors (see below), whose sum is σ = 56347596. Its totient is φ = 56266144.

The previous prime is 56306857. The next prime is 56306879. The reversal of 56306869 is 96860365.

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 50594769 + 5712100 = 7113^2 + 2390^2 .

It is a cyclic number.

It is not a de Polignac number, because 56306869 - 2⁵ = 56306837 is a prime.

It is a super-2 number, since 2×56306869² = 6340926993166322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56306849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18214 + ... + 21079.

It is an arithmetic number, because the mean of its divisors is an integer number (14086899).

Almost surely, 2^56306869 is an apocalyptic number.

It is an amenable number.

56306869 is a deficient number, since it is larger than the sum of its proper divisors (40727).

56306869 is a wasteful number, since it uses less digits than its factorization.

56306869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40726.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 56306869 is about 7503.7903089039. The cubic root of 56306869 is about 383.2837964133.

It can be divided in two parts, 56306 and 869, that added together give a palindrome (57175).

The spelling of 56306869 in words is "fifty-six million, three hundred six thousand, eight hundred sixty-nine".