56218085 has 16 divisors (see below), whose sum is σ = 84108672. Its totient is φ = 35044800.

The previous prime is 56218081. The next prime is 56218111. The reversal of 56218085 is 58081265.

It is a happy number.

It is not a de Polignac number, because 56218085 - 2² = 56218081 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56218081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72626 + ... + 73395.

It is an arithmetic number, because the mean of its divisors is an integer number (5256792).

Almost surely, 2^56218085 is an apocalyptic number.

56218085 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56218085 is a deficient number, since it is larger than the sum of its proper divisors (27890587).

56218085 is a wasteful number, since it uses less digits than its factorization.

56218085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146044.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 56218085 is about 7497.8720314500. The cubic root of 56218085 is about 383.0822379971.

It can be divided in two parts, 562180 and 85, that added together give a palindrome (562265).

The spelling of 56218085 in words is "fifty-six million, two hundred eighteen thousand, eighty-five".