64561152 has 112 divisors (see below), whose sum is σ = 179295552. Its totient is φ = 20643840.

The previous prime is 64561141. The next prime is 64561153. The reversal of 64561152 is 25116546.

It is not an unprimeable number, because it can be changed into a prime (64561153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 909277 + ... + 909347.

Almost surely, 2^64561152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64561152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89647776).

64561152 is an abundant number, since it is smaller than the sum of its proper divisors (114734400).

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

64561152 is an equidigital number, since it uses as much as digits as its factorization.

64561152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 113 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 64561152 is about 8034.9954573727. The cubic root of 64561152 is about 401.1656664214.

Adding to 64561152 its reverse (25116546), we get a palindrome (89677698).

The spelling of 64561152 in words is "sixty-four million, five hundred sixty-one thousand, one hundred fifty-two".