56943540 has 96 divisors (see below), whose sum is σ = 187608960. Its totient is φ = 14289408.

The previous prime is 56943539. The next prime is 56943541. The reversal of 56943540 is 4534965.

It is a happy number.

56943540 is a `hidden beast` number, since 569 + 43 + 54 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (56943539) and next prime (56943541).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 56943495 and 56943504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56943541) 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, 6079 + ... + 12281.

It is an arithmetic number, because the mean of its divisors is an integer number (1954260).

Almost surely, 2^56943540 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 56943540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93804480).

56943540 is an abundant number, since it is smaller than the sum of its proper divisors (130665420).

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

56943540 is a wasteful number, since it uses less digits than its factorization.

56943540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6238 (or 6230 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 56943540 is about 7546.0943540351. The cubic root of 56943540 is about 384.7230030949.

The spelling of 56943540 in words is "fifty-six million, nine hundred forty-three thousand, five hundred forty".