56197219 has 4 divisors (see below), whose sum is σ = 60520096. Its totient is φ = 51874344.

The previous prime is 56197201. The next prime is 56197237. The reversal of 56197219 is 91279165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91279165 = 5 ⋅18255833.

It is an interprime number because it is at equal distance from previous prime (56197201) and next prime (56197237).

It is a cyclic number.

It is not a de Polignac number, because 56197219 - 2⁷ = 56197091 is a prime.

It is a super-2 number, since 2×56197219² = 6316254846667922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56197279) 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, 2161419 + ... + 2161444.

It is an arithmetic number, because the mean of its divisors is an integer number (15130024).

Almost surely, 2^56197219 is an apocalyptic number.

56197219 is a deficient number, since it is larger than the sum of its proper divisors (4322877).

56197219 is a wasteful number, since it uses less digits than its factorization.

56197219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4322876.

The product of its digits is 34020, while the sum is 40.

The square root of 56197219 is about 7496.4804408469. The cubic root of 56197219 is about 383.0348369805.

The spelling of 56197219 in words is "fifty-six million, one hundred ninety-seven thousand, two hundred nineteen".