64511552 has 28 divisors (see below), whose sum is σ = 146304000. Its totient is φ = 27647616.

The previous prime is 64511543. The next prime is 64511563. The reversal of 64511552 is 25511546.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (28).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71552 + ... + 72447.

Almost surely, 2^64511552 is an apocalyptic number.

It is an amenable number.

64511552 is an abundant number, since it is smaller than the sum of its proper divisors (81792448).

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

64511552 is a wasteful number, since it uses less digits than its factorization.

64511552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144018 (or 144008 counting only the distinct ones).

The product of its digits is 6000, while the sum is 29.

The square root of 64511552 is about 8031.9083660112. The cubic root of 64511552 is about 401.0629064065.

The spelling of 64511552 in words is "sixty-four million, five hundred eleven thousand, five hundred fifty-two".