64191552 has 28 divisors (see below), whose sum is σ = 169840656. Its totient is φ = 21397120.

The previous prime is 64191539. The next prime is 64191577. The reversal of 64191552 is 25519146.

64191552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 166974 + ... + 167357.

Almost surely, 2^64191552 is an apocalyptic number.

It is an amenable number.

64191552 is an abundant number, since it is smaller than the sum of its proper divisors (105649104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64191552 is a wasteful number, since it uses less digits than its factorization.

64191552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334346 (or 334336 counting only the distinct ones).

The product of its digits is 10800, while the sum is 33.

The square root of 64191552 is about 8011.9630553317. The cubic root of 64191552 is about 400.3986691918.

The spelling of 64191552 in words is "sixty-four million, one hundred ninety-one thousand, five hundred fifty-two".