56061985 has 16 divisors (see below), whose sum is σ = 77018112. Its totient is φ = 38376000.

The previous prime is 56061983. The next prime is 56062003. The reversal of 56061985 is 58916065.

It is not a de Polignac number, because 56061985 - 2¹ = 56061983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56061983) 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, 27760 + ... + 29710.

It is an arithmetic number, because the mean of its divisors is an integer number (4813632).

Almost surely, 2^56061985 is an apocalyptic number.

It is an amenable number.

56061985 is a deficient number, since it is larger than the sum of its proper divisors (20956127).

56061985 is a wasteful number, since it uses less digits than its factorization.

56061985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 56061985 is about 7487.4551751580. The cubic root of 56061985 is about 382.7273428851.

The spelling of 56061985 in words is "fifty-six million, sixty-one thousand, nine hundred eighty-five".