64504550 has 24 divisors (see below), whose sum is σ = 130886712. Its totient is φ = 23456000.

The previous prime is 64504541. The next prime is 64504571. The reversal of 64504550 is 5540546.

64504550 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 (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 58091 + ... + 59190.

It is an arithmetic number, because the mean of its divisors is an integer number (5453613).

Almost surely, 2^64504550 is an apocalyptic number.

64504550 is an abundant number, since it is smaller than the sum of its proper divisors (66382162).

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

64504550 is a wasteful number, since it uses less digits than its factorization.

64504550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117304 (or 117299 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 64504550 is about 8031.4724677359. The cubic root of 64504550 is about 401.0483955993.

The spelling of 64504550 in words is "sixty-four million, five hundred four thousand, five hundred fifty".