56424457 has 4 divisors (see below), whose sum is σ = 56762496.
Its totient is φ = 56086420.
The previous prime is 56424443. The next prime is 56424463. The reversal of 56424457 is 75442465.
56424457 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.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-56424457 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (56424427) 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, 168769 + ... + 169102.
It is an arithmetic number, because the mean of its divisors is an integer number (14190624).
Almost surely, 256424457 is an apocalyptic number.
It is an amenable number.
56424457 is a deficient number, since it is larger than the sum of its proper divisors (338039).
56424457 is a wasteful number, since it uses less digits than its factorization.
56424457 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 338038.
The product of its digits is 134400, while the sum is 37.
The square root of 56424457 is about 7511.6214627735.
The cubic root of 56424457 is about 383.5504201168.
The spelling of 56424457 in words is "fifty-six million, four hundred twenty-four thousand, four hundred fifty-seven".