56526660 has 84 divisors (see below), whose sum is σ = 178023468. Its totient is φ = 15069888.

The previous prime is 56526643. The next prime is 56526667. The reversal of 56526660 is 6662565.

56526660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 17288964 + 39237696 = 4158^2 + 6264^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (56526667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 12642 + ... + 16518.

It is an arithmetic number, because the mean of its divisors is an integer number (2119327).

Almost surely, 2^56526660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56526660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89011734).

56526660 is an abundant number, since it is smaller than the sum of its proper divisors (121496808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56526660 is a wasteful number, since it uses less digits than its factorization.

56526660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3904 (or 3887 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 56526660 is about 7518.4213768583. The cubic root of 56526660 is about 383.7818585242.

It can be divided in two parts, 565 and 26660, that added together give a square (27225 = 165²).

The spelling of 56526660 in words is "fifty-six million, five hundred twenty-six thousand, six hundred sixty".