56506266 has 48 divisors (see below), whose sum is σ = 136468800. Its totient is φ = 16792704.

The previous prime is 56506253. The next prime is 56506277. The reversal of 56506266 is 66260565.

It is a self number, because there is not a number n which added to its sum of digits gives 56506266.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 955 + ... + 10673.

It is an arithmetic number, because the mean of its divisors is an integer number (2843100).

Almost surely, 2^56506266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56506266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68234400).

56506266 is an abundant number, since it is smaller than the sum of its proper divisors (79962534).

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

56506266 is a wasteful number, since it uses less digits than its factorization.

56506266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9763 (or 9760 counting only the distinct ones).

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

The square root of 56506266 is about 7517.0649857508. The cubic root of 56506266 is about 383.7356986610.

The spelling of 56506266 in words is "fifty-six million, five hundred six thousand, two hundred sixty-six".