56476489 has 2 divisors, whose sum is σ = 56476490. Its totient is φ = 56476488.

The previous prime is 56476487. The next prime is 56476507. The reversal of 56476489 is 98467465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48066489 + 8410000 = 6933^2 + 2900^2 .

It is a cyclic number.

It is not a de Polignac number, because 56476489 - 2¹ = 56476487 is a prime.

Together with 56476487, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56476481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28238244 + 28238245.

It is an arithmetic number, because the mean of its divisors is an integer number (28238245).

Almost surely, 2^56476489 is an apocalyptic number.

It is an amenable number.

56476489 is a deficient number, since it is larger than the sum of its proper divisors (1).

56476489 is an equidigital number, since it uses as much as digits as its factorization.

56476489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 49.

The square root of 56476489 is about 7515.0840979992. The cubic root of 56476489 is about 383.6682813259.

It can be divided in two parts, 56476 and 489, that added together give a palindrome (56965).

The spelling of 56476489 in words is "fifty-six million, four hundred seventy-six thousand, four hundred eighty-nine".