56066515 has 4 divisors (see below), whose sum is σ = 67279824. Its totient is φ = 44853208.

The previous prime is 56066509. The next prime is 56066519. The reversal of 56066515 is 51566065.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56066515 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56066519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5606647 + ... + 5606656.

It is an arithmetic number, because the mean of its divisors is an integer number (16819956).

Almost surely, 2^56066515 is an apocalyptic number.

56066515 is a deficient number, since it is larger than the sum of its proper divisors (11213309).

56066515 is a wasteful number, since it uses less digits than its factorization.

56066515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11213308.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 56066515 is about 7487.7576750320. The cubic root of 56066515 is about 382.7376511666.

It can be divided in two parts, 5606 and 6515, that added together give a palindrome (12121).

The spelling of 56066515 in words is "fifty-six million, sixty-six thousand, five hundred fifteen".