56782518 has 16 divisors (see below), whose sum is σ = 122300976. Its totient is φ = 17471520.

The previous prime is 56782511. The next prime is 56782529. The reversal of 56782518 is 81528765.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56782518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56782511) 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, 363913 + ... + 364068.

It is an arithmetic number, because the mean of its divisors is an integer number (7643811).

Almost surely, 2^56782518 is an apocalyptic number.

56782518 is an abundant number, since it is smaller than the sum of its proper divisors (65518458).

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

56782518 is a wasteful number, since it uses less digits than its factorization.

56782518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727999.

The product of its digits is 134400, while the sum is 42.

The square root of 56782518 is about 7535.4175730347. The cubic root of 56782518 is about 384.3600274689.

The spelling of 56782518 in words is "fifty-six million, seven hundred eighty-two thousand, five hundred eighteen".