56170213 has 8 divisors (see below), whose sum is σ = 64501920. Its totient is φ = 48376080.

The previous prime is 56170139. The next prime is 56170223. The reversal of 56170213 is 31207165.

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 56170213 - 2²⁵ = 22615781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56170223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134170 + ... + 134587.

It is an arithmetic number, because the mean of its divisors is an integer number (8062740).

Almost surely, 2^56170213 is an apocalyptic number.

It is an amenable number.

56170213 is a deficient number, since it is larger than the sum of its proper divisors (8331707).

56170213 is a wasteful number, since it uses less digits than its factorization.

56170213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268787.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 56170213 is about 7494.6789791158. The cubic root of 56170213 is about 382.9734703837.

Adding to 56170213 its reverse (31207165), we get a palindrome (87377378).

The spelling of 56170213 in words is "fifty-six million, one hundred seventy thousand, two hundred thirteen".