63216545 has 24 divisors (see below), whose sum is σ = 88501056. Its totient is φ = 42464448.

The previous prime is 63216541. The next prime is 63216583. The reversal of 63216545 is 54561236.

63216545 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 63216545 - 2² = 63216541 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63216541) 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 23 ways as a sum of consecutive naturals, for example, 97994 + ... + 98636.

It is an arithmetic number, because the mean of its divisors is an integer number (3687544).

Almost surely, 2^63216545 is an apocalyptic number.

It is an amenable number.

63216545 is a deficient number, since it is larger than the sum of its proper divisors (25284511).

63216545 is an equidigital number, since it uses as much as digits as its factorization.

63216545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761 (or 708 counting only the distinct ones).

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

The square root of 63216545 is about 7950.8832842647. The cubic root of 63216545 is about 398.3610962406.

The spelling of 63216545 in words is "sixty-three million, two hundred sixteen thousand, five hundred forty-five".