63521465 has 32 divisors (see below), whose sum is σ = 93312000. Its totient is φ = 40540608.

The previous prime is 63521459. The next prime is 63521483. The reversal of 63521465 is 56412536.

63521465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63521465 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 38426 + ... + 40044.

It is an arithmetic number, because the mean of its divisors is an integer number (2916000).

Almost surely, 2^63521465 is an apocalyptic number.

It is an amenable number.

63521465 is a deficient number, since it is larger than the sum of its proper divisors (29790535).

63521465 is a wasteful number, since it uses less digits than its factorization.

63521465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709.

The product of its digits is 21600, while the sum is 32.

The square root of 63521465 is about 7970.0354453415. The cubic root of 63521465 is about 399.0005569471. Note that the first 3 decimals are identical.

The spelling of 63521465 in words is "sixty-three million, five hundred twenty-one thousand, four hundred sixty-five".