64503552 has 72 divisors (see below), whose sum is σ = 175424256. Its totient is φ = 21031936.

The previous prime is 64503539. The next prime is 64503563. The reversal of 64503552 is 25530546.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35203 + ... + 36989.

It is an arithmetic number, because the mean of its divisors is an integer number (2436448).

Almost surely, 2^64503552 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 64503552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87712128).

64503552 is an abundant number, since it is smaller than the sum of its proper divisors (110920704).

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

64503552 is a wasteful number, since it uses less digits than its factorization.

64503552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853 (or 1839 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 64503552 is about 8031.4103369209. The cubic root of 64503552 is about 401.0463272782.

The spelling of 64503552 in words is "sixty-four million, five hundred three thousand, five hundred fifty-two".