64500553 has 16 divisors (see below), whose sum is σ = 74188800. Its totient is φ = 55621440.

The previous prime is 64500539. The next prime is 64500613. The reversal of 64500553 is 35500546.

64500553 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 64500553 - 2⁵ = 64500521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64500353) 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 15 ways as a sum of consecutive naturals, for example, 8928 + ... + 14446.

It is an arithmetic number, because the mean of its divisors is an integer number (4636800).

Almost surely, 2^64500553 is an apocalyptic number.

It is an amenable number.

64500553 is a deficient number, since it is larger than the sum of its proper divisors (9688247).

64500553 is a wasteful number, since it uses less digits than its factorization.

64500553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5592.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 64500553 is about 8031.2236303069. The cubic root of 64500553 is about 401.0401118243.

The spelling of 64500553 in words is "sixty-four million, five hundred thousand, five hundred fifty-three".