56057489 has 4 divisors (see below), whose sum is σ = 56255856. Its totient is φ = 55859124.

The previous prime is 56057473. The next prime is 56057497. The reversal of 56057489 is 98475065.

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 56057489 - 2⁴ = 56057473 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56056489) 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, 98759 + ... + 99324.

It is an arithmetic number, because the mean of its divisors is an integer number (14063964).

Almost surely, 2^56057489 is an apocalyptic number.

It is an amenable number.

56057489 is a deficient number, since it is larger than the sum of its proper divisors (198367).

56057489 is a wasteful number, since it uses less digits than its factorization.

56057489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198366.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 56057489 is about 7487.1549336180. The cubic root of 56057489 is about 382.7171114235.

The spelling of 56057489 in words is "fifty-six million, fifty-seven thousand, four hundred eighty-nine".