56445424 has 80 divisors (see below), whose sum is σ = 131295168. Its totient is φ = 23003136.

The previous prime is 56445419. The next prime is 56445437. The reversal of 56445424 is 42454465.

It is a self number, because there is not a number n which added to its sum of digits gives 56445424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219504 + ... + 219760.

Almost surely, 2^56445424 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 56445424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65647584).

56445424 is an abundant number, since it is smaller than the sum of its proper divisors (74849744).

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

56445424 is a wasteful number, since it uses less digits than its factorization.

56445424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 356 counting only the distinct ones).

The product of its digits is 76800, while the sum is 34.

The square root of 56445424 is about 7513.0169705652. The cubic root of 56445424 is about 383.5979226018.

Adding to 56445424 its reverse (42454465), we get a palindrome (98899889).

The spelling of 56445424 in words is "fifty-six million, four hundred forty-five thousand, four hundred twenty-four".