56782506 has 16 divisors (see below), whose sum is σ = 123889248. Its totient is φ = 17206800.

The previous prime is 56782501. The next prime is 56782511. The reversal of 56782506 is 60528765.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (56782501) and next prime (56782511).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56782501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430105 + ... + 430236.

It is an arithmetic number, because the mean of its divisors is an integer number (7743078).

Almost surely, 2^56782506 is an apocalyptic number.

56782506 is an abundant number, since it is smaller than the sum of its proper divisors (67106742).

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

56782506 is a wasteful number, since it uses less digits than its factorization.

56782506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860357.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 56782506 is about 7535.4167767948. The cubic root of 56782506 is about 384.3600003929.

The spelling of 56782506 in words is "fifty-six million, seven hundred eighty-two thousand, five hundred six".