64021252 has 12 divisors (see below), whose sum is σ = 118627740. Its totient is φ = 30127616.

The previous prime is 64021229. The next prime is 64021267. The reversal of 64021252 is 25212046.

It can be written as a sum of positive squares in 2 ways, for example, as 57395776 + 6625476 = 7576^2 + 2574^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470677 + ... + 470812.

It is an arithmetic number, because the mean of its divisors is an integer number (9885645).

Almost surely, 2^64021252 is an apocalyptic number.

It is an amenable number.

64021252 is a deficient number, since it is larger than the sum of its proper divisors (54606488).

64021252 is a wasteful number, since it uses less digits than its factorization.

64021252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941510 (or 941508 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 64021252 is about 8001.3281397528. The cubic root of 64021252 is about 400.0442701002.

Adding to 64021252 its reverse (25212046), we get a palindrome (89233298).

The spelling of 64021252 in words is "sixty-four million, twenty-one thousand, two hundred fifty-two".