64553272 has 32 divisors (see below), whose sum is σ = 144345600. Its totient is φ = 26462304.

The previous prime is 64553239. The next prime is 64553273. The reversal of 64553272 is 27235546.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64553273) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23772 + ... + 26347.

It is an arithmetic number, because the mean of its divisors is an integer number (4510800).

Almost surely, 2^64553272 is an apocalyptic number.

It is an amenable number.

64553272 is an abundant number, since it is smaller than the sum of its proper divisors (79792328).

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

64553272 is a wasteful number, since it uses less digits than its factorization.

64553272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50155 (or 50151 counting only the distinct ones).

The product of its digits is 50400, while the sum is 34.

The square root of 64553272 is about 8034.5050874338. The cubic root of 64553272 is about 401.1493443558.

The spelling of 64553272 in words is "sixty-four million, five hundred fifty-three thousand, two hundred seventy-two".