64557552 has 20 divisors (see below), whose sum is σ = 166773800. Its totient is φ = 21519168.

The previous prime is 64557547. The next prime is 64557553. The reversal of 64557552 is 25575546.

64557552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 64557552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64557553) 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, 672427 + ... + 672522.

It is an arithmetic number, because the mean of its divisors is an integer number (8338690).

Almost surely, 2^64557552 is an apocalyptic number.

It is an amenable number.

64557552 is an abundant number, since it is smaller than the sum of its proper divisors (102216248).

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

64557552 is a wasteful number, since it uses less digits than its factorization.

64557552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344960 (or 1344954 counting only the distinct ones).

The product of its digits is 210000, while the sum is 39.

The square root of 64557552 is about 8034.7714342102. The cubic root of 64557552 is about 401.1582098050.

The spelling of 64557552 in words is "sixty-four million, five hundred fifty-seven thousand, five hundred fifty-two".