56170223 has 2 divisors, whose sum is σ = 56170224. Its totient is φ = 56170222.

The previous prime is 56170139. The next prime is 56170229. The reversal of 56170223 is 32207165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56170223 - 2¹⁰ = 56169199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56170192 and 56170201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56170229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28085111 + 28085112.

It is an arithmetic number, because the mean of its divisors is an integer number (28085112).

Almost surely, 2^56170223 is an apocalyptic number.

56170223 is a deficient number, since it is larger than the sum of its proper divisors (1).

56170223 is an equidigital number, since it uses as much as digits as its factorization.

56170223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 56170223 is about 7494.6796462557. The cubic root of 56170223 is about 382.9734931106.

Adding to 56170223 its reverse (32207165), we get a palindrome (88377388).

The spelling of 56170223 in words is "fifty-six million, one hundred seventy thousand, two hundred twenty-three".