56720210 has 8 divisors (see below), whose sum is σ = 102096396. Its totient is φ = 22688080.

The previous prime is 56720207. The next prime is 56720239. The reversal of 56720210 is 1202765.

It can be written as a sum of positive squares in 2 ways, for example, as 55190041 + 1530169 = 7429^2 + 1237^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2836001 + ... + 2836020.

Almost surely, 2^56720210 is an apocalyptic number.

56720210 is a deficient number, since it is larger than the sum of its proper divisors (45376186).

56720210 is a wasteful number, since it uses less digits than its factorization.

56720210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5672028.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 56720210 is about 7531.2820953673. The cubic root of 56720210 is about 384.2193887037.

Adding to 56720210 its reverse (1202765), we get a palindrome (57922975).

The spelling of 56720210 in words is "fifty-six million, seven hundred twenty thousand, two hundred ten".