56665448 has 48 divisors (see below), whose sum is σ = 128198880. Its totient is φ = 22998816.

The previous prime is 56665423. The next prime is 56665487. The reversal of 56665448 is 84456665.

It is a junction number, because it is equal to n+sod(n) for n = 56665399 and 56665408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18815 + ... + 21617.

It is an arithmetic number, because the mean of its divisors is an integer number (2670810).

Almost surely, 2^56665448 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 56665448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64099440).

56665448 is an abundant number, since it is smaller than the sum of its proper divisors (71533432).

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

56665448 is a wasteful number, since it uses less digits than its factorization.

56665448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854 (or 2831 counting only the distinct ones).

The product of its digits is 691200, while the sum is 44.

The square root of 56665448 is about 7527.6455814551. The cubic root of 56665448 is about 384.0956973586.

The spelling of 56665448 in words is "fifty-six million, six hundred sixty-five thousand, four hundred forty-eight".