64521052 has 12 divisors (see below), whose sum is σ = 119553840. Its totient is φ = 30362816.

The previous prime is 64521047. The next prime is 64521053. The reversal of 64521052 is 25012546.

64521052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64521053) 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 3 ways as a sum of consecutive naturals, for example, 474352 + ... + 474487.

It is an arithmetic number, because the mean of its divisors is an integer number (9962820).

Almost surely, 2^64521052 is an apocalyptic number.

It is an amenable number.

64521052 is a deficient number, since it is larger than the sum of its proper divisors (55032788).

64521052 is a wasteful number, since it uses less digits than its factorization.

64521052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948860 (or 948858 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 64521052 is about 8032.4997354497. The cubic root of 64521052 is about 401.0825923412.

Adding to 64521052 its reverse (25012546), we get a palindrome (89533598).

The spelling of 64521052 in words is "sixty-four million, five hundred twenty-one thousand, fifty-two".