56425440 has 192 divisors, whose sum is σ = 195955200. Its totient is φ = 13584384.

The previous prime is 56425403. The next prime is 56425441. The reversal of 56425440 is 4452465.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 56425398 and 56425407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56425441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 209626 + ... + 209894.

It is an arithmetic number, because the mean of its divisors is an integer number (1020600).

Almost surely, 2^56425440 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 56425440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97977600).

56425440 is an abundant number, since it is smaller than the sum of its proper divisors (139529760).

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

56425440 is a wasteful number, since it uses less digits than its factorization.

56425440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 56425440 is about 7511.6868944332. The cubic root of 56425440 is about 383.5526474481.

It can be divided in two parts, 56425 and 440, that added together give a palindrome (56865).

The spelling of 56425440 in words is "fifty-six million, four hundred twenty-five thousand, four hundred forty".