56121744 has 160 divisors (see below), whose sum is σ = 178560000. Its totient is φ = 14833152.

The previous prime is 56121733. The next prime is 56121773. The reversal of 56121744 is 44712165.

56121744 = T₃₅₂₇ + T₃₅₂₈ + ... + T₃₅₃₅.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 376582 + ... + 376730.

It is an arithmetic number, because the mean of its divisors is an integer number (1116000).

Almost surely, 2^56121744 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 56121744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89280000).

56121744 is an abundant number, since it is smaller than the sum of its proper divisors (122438256).

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

56121744 is a wasteful number, since it uses less digits than its factorization.

56121744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 239 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 56121744 is about 7491.4447204795. Note that the first 3 decimals coincide. The cubic root of 56121744 is about 382.8632833775.

It can be divided in two parts, 56121 and 744, that added together give a palindrome (56865).

The spelling of 56121744 in words is "fifty-six million, one hundred twenty-one thousand, seven hundred forty-four".