64136552 has 32 divisors (see below), whose sum is σ = 127591200. Its totient is φ = 30139200.

The previous prime is 64136543. The next prime is 64136557. The reversal of 64136552 is 25563146.

64136552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64136552² = 8226994604897408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64136557) 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 7 ways as a sum of consecutive naturals, for example, 18302 + ... + 21522.

It is an arithmetic number, because the mean of its divisors is an integer number (3987225).

Almost surely, 2^64136552 is an apocalyptic number.

It is an amenable number.

64136552 is a deficient number, since it is larger than the sum of its proper divisors (63454648).

64136552 is a wasteful number, since it uses less digits than its factorization.

64136552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3377 (or 3373 counting only the distinct ones).

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

The square root of 64136552 is about 8008.5299524944. The cubic root of 64136552 is about 400.2842812459.

Adding to 64136552 its reverse (25563146), we get a palindrome (89699698).

The spelling of 64136552 in words is "sixty-four million, one hundred thirty-six thousand, five hundred fifty-two".