56228709 has 8 divisors (see below), whose sum is σ = 77556960. Its totient is φ = 36193136.

The previous prime is 56228701. The next prime is 56228713. The reversal of 56228709 is 90782265.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 56228709 - 2³ = 56228701 is a prime.

It is a super-3 number, since 3×56228709³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56228701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323067 + ... + 323240.

It is an arithmetic number, because the mean of its divisors is an integer number (9694620).

Almost surely, 2^56228709 is an apocalyptic number.

It is an amenable number.

56228709 is a deficient number, since it is larger than the sum of its proper divisors (21328251).

56228709 is a wasteful number, since it uses less digits than its factorization.

56228709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646339.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 56228709 is about 7498.5804656615. The cubic root of 56228709 is about 383.1063678914.

The spelling of 56228709 in words is "fifty-six million, two hundred twenty-eight thousand, seven hundred nine".