56160421 has 4 divisors (see below), whose sum is σ = 56179872. Its totient is φ = 56140972.

The previous prime is 56160407. The next prime is 56160463. The reversal of 56160421 is 12406165.

56160421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12406165 = 5 ⋅2481233.

It is a cyclic number.

It is not a de Polignac number, because 56160421 - 2¹⁷ = 56029349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56160121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4435 + ... + 11488.

It is an arithmetic number, because the mean of its divisors is an integer number (14044968).

Almost surely, 2^56160421 is an apocalyptic number.

It is an amenable number.

56160421 is a deficient number, since it is larger than the sum of its proper divisors (19451).

56160421 is a wasteful number, since it uses less digits than its factorization.

56160421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19450.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 56160421 is about 7494.0256871724. The cubic root of 56160421 is about 382.9512148503.

Adding to 56160421 its reverse (12406165), we get a palindrome (68566586).

The spelling of 56160421 in words is "fifty-six million, one hundred sixty thousand, four hundred twenty-one".