64145552 has 10 divisors (see below), whose sum is σ = 124282038. Its totient is φ = 32072768.

The previous prime is 64145527. The next prime is 64145561. The reversal of 64145552 is 25554146.

It can be written as a sum of positive squares in only one way, i.e., 58308496 + 5837056 = 7636^2 + 2416^2 .

It is a super-2 number, since 2×64145552² = 8229303682769408, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 2004533 + ... + 2004564.

Almost surely, 2^64145552 is an apocalyptic number.

It is an amenable number.

64145552 is a deficient number, since it is larger than the sum of its proper divisors (60136486).

64145552 is a wasteful number, since it uses less digits than its factorization.

64145552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4009105 (or 4009099 counting only the distinct ones).

The product of its digits is 24000, while the sum is 32.

The square root of 64145552 is about 8009.0918336600. The cubic root of 64145552 is about 400.3030037472.

Adding to 64145552 its reverse (25554146), we get a palindrome (89699698).

The spelling of 64145552 in words is "sixty-four million, one hundred forty-five thousand, five hundred fifty-two".