56222309 has 16 divisors (see below), whose sum is σ = 66675840. Its totient is φ = 46733760.

The previous prime is 56222261. The next prime is 56222323. The reversal of 56222309 is 90322265.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56222309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56222399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13784 + ... + 17390.

It is an arithmetic number, because the mean of its divisors is an integer number (4167240).

Almost surely, 2^56222309 is an apocalyptic number.

It is an amenable number.

56222309 is a deficient number, since it is larger than the sum of its proper divisors (10453531).

56222309 is a wasteful number, since it uses less digits than its factorization.

56222309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 56222309 is about 7498.1537060799. The cubic root of 56222309 is about 383.0918321745.

The spelling of 56222309 in words is "fifty-six million, two hundred twenty-two thousand, three hundred nine".