56659489 has 2 divisors, whose sum is σ = 56659490. Its totient is φ = 56659488.

The previous prime is 56659483. The next prime is 56659513. The reversal of 56659489 is 98495665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44997264 + 11662225 = 6708^2 + 3415^2 .

It is a cyclic number.

It is not a de Polignac number, because 56659489 - 2³ = 56659481 is a prime.

It is a super-2 number, since 2×56659489² = 6420595387482242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56659481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28329744 + 28329745.

It is an arithmetic number, because the mean of its divisors is an integer number (28329745).

Almost surely, 2^56659489 is an apocalyptic number.

It is an amenable number.

56659489 is a deficient number, since it is larger than the sum of its proper divisors (1).

56659489 is an equidigital number, since it uses as much as digits as its factorization.

56659489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2332800, while the sum is 52.

The square root of 56659489 is about 7527.2497633598. The cubic root of 56659489 is about 384.0822329132.

The spelling of 56659489 in words is "fifty-six million, six hundred fifty-nine thousand, four hundred eighty-nine".