56243121 has 16 divisors (see below), whose sum is σ = 82357248. Its totient is φ = 33858000.

The previous prime is 56243113. The next prime is 56243149. The reversal of 56243121 is 12134265.

It is not a de Polignac number, because 56243121 - 2³ = 56243113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56243091 and 56243100.

It is not an unprimeable number, because it can be changed into a prime (56243101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 661 + ... + 10626.

It is an arithmetic number, because the mean of its divisors is an integer number (5147328).

Almost surely, 2^56243121 is an apocalyptic number.

It is an amenable number.

56243121 is a deficient number, since it is larger than the sum of its proper divisors (26114127).

56243121 is a wasteful number, since it uses less digits than its factorization.

56243121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11452.

The product of its digits is 1440, while the sum is 24.

The square root of 56243121 is about 7499.5413859782. The cubic root of 56243121 is about 383.1390964709.

Adding to 56243121 its reverse (12134265), we get a palindrome (68377386).

The spelling of 56243121 in words is "fifty-six million, two hundred forty-three thousand, one hundred twenty-one".