56543489 has 2 divisors, whose sum is σ = 56543490. Its totient is φ = 56543488.

The previous prime is 56543483. The next prime is 56543497. The reversal of 56543489 is 98434565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49210225 + 7333264 = 7015^2 + 2708^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56543489 is a prime.

It is a super-2 number, since 2×56543489² = 6394332296586242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56543483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28271744 + 28271745.

It is an arithmetic number, because the mean of its divisors is an integer number (28271745).

Almost surely, 2^56543489 is an apocalyptic number.

It is an amenable number.

56543489 is a deficient number, since it is larger than the sum of its proper divisors (1).

56543489 is an equidigital number, since it uses as much as digits as its factorization.

56543489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 44.

The square root of 56543489 is about 7519.5404779814. The cubic root of 56543489 is about 383.8199409916.

The spelling of 56543489 in words is "fifty-six million, five hundred forty-three thousand, four hundred eighty-nine".