56449665 has 48 divisors (see below), whose sum is σ = 104158080. Its totient is φ = 28200960.

The previous prime is 56449663. The next prime is 56449691. The reversal of 56449665 is 56694465.

56449665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56449665 - 2¹ = 56449663 is a prime.

It is a super-2 number, since 2×56449665² = 6373129357224450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56449665.

It is not an unprimeable number, because it can be changed into a prime (56449663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 87745 + ... + 88385.

It is an arithmetic number, because the mean of its divisors is an integer number (2169960).

Almost surely, 2^56449665 is an apocalyptic number.

It is an amenable number.

56449665 is a deficient number, since it is larger than the sum of its proper divisors (47708415).

56449665 is a wasteful number, since it uses less digits than its factorization.

56449665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774 (or 771 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 56449665 is about 7513.2992087365. The cubic root of 56449665 is about 383.6075295101.

The spelling of 56449665 in words is "fifty-six million, four hundred forty-nine thousand, six hundred sixty-five".