56709219 has 20 divisors (see below), whose sum is σ = 88220296. Its totient is φ = 32401152.

The previous prime is 56709193. The next prime is 56709223. The reversal of 56709219 is 91290765.

It is not a de Polignac number, because 56709219 - 2⁵ = 56709187 is a prime.

It is a super-2 number, since 2×56709219² = 6431871039179922, 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 (56709259) 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 19 ways as a sum of consecutive naturals, for example, 3267 + ... + 11139.

Almost surely, 2^56709219 is an apocalyptic number.

56709219 is a deficient number, since it is larger than the sum of its proper divisors (31511077).

56709219 is an frugal number, since it uses more digits than its factorization.

56709219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7904 (or 7883 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 56709219 is about 7530.5523701784. The cubic root of 56709219 is about 384.1945696365.

The spelling of 56709219 in words is "fifty-six million, seven hundred nine thousand, two hundred nineteen".