56411520 has 128 divisors (see below), whose sum is σ = 196231680. Its totient is φ = 13670400.

The previous prime is 56411507. The next prime is 56411527. The reversal of 56411520 is 2511465.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56411527) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 19785 + ... + 22455.

It is an arithmetic number, because the mean of its divisors is an integer number (1533060).

Almost surely, 2^56411520 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 56411520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98115840).

56411520 is an abundant number, since it is smaller than the sum of its proper divisors (139820160).

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

56411520 is a wasteful number, since it uses less digits than its factorization.

56411520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2704 (or 2692 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 56411520 is about 7510.7602810901. The cubic root of 56411520 is about 383.5211043950.

Adding to 56411520 its reverse (2511465), we get a palindrome (58922985).

The spelling of 56411520 in words is "fifty-six million, four hundred eleven thousand, five hundred twenty".