56428529 has 4 divisors (see below), whose sum is σ = 57629184. Its totient is φ = 55227876.

The previous prime is 56428523. The next prime is 56428543. The reversal of 56428529 is 92582465.

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 not a de Polignac number, because 56428529 - 2¹⁶ = 56362993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56428523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 600257 + ... + 600350.

It is an arithmetic number, because the mean of its divisors is an integer number (14407296).

Almost surely, 2^56428529 is an apocalyptic number.

It is an amenable number.

56428529 is a deficient number, since it is larger than the sum of its proper divisors (1200655).

56428529 is a wasteful number, since it uses less digits than its factorization.

56428529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200654.

The product of its digits is 172800, while the sum is 41.

The square root of 56428529 is about 7511.8925045557. The cubic root of 56428529 is about 383.5596464927.

The spelling of 56428529 in words is "fifty-six million, four hundred twenty-eight thousand, five hundred twenty-nine".