56121624 has 96 divisors (see below), whose sum is σ = 173365920. Its totient is φ = 16247808.

The previous prime is 56121623. The next prime is 56121629. The reversal of 56121624 is 42612165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56121623) 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 23 ways as a sum of consecutive naturals, for example, 14149 + ... + 17675.

It is an arithmetic number, because the mean of its divisors is an integer number (1805895).

Almost surely, 2^56121624 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 56121624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86682960).

56121624 is an abundant number, since it is smaller than the sum of its proper divisors (117244296).

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

56121624 is a wasteful number, since it uses less digits than its factorization.

56121624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3569 (or 3562 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 56121624 is about 7491.4367113392. The cubic root of 56121624 is about 382.8630104968.

Adding to 56121624 its reverse (42612165), we get a palindrome (98733789).

The spelling of 56121624 in words is "fifty-six million, one hundred twenty-one thousand, six hundred twenty-four".