64391052 has 24 divisors (see below), whose sum is σ = 163904832. Its totient is φ = 19512400.

The previous prime is 64391039. The next prime is 64391059. The reversal of 64391052 is 25019346.

It is not an unprimeable number, because it can be changed into a prime (64391059) 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, 243774 + ... + 244037.

It is an arithmetic number, because the mean of its divisors is an integer number (6829368).

Almost surely, 2^64391052 is an apocalyptic number.

It is an amenable number.

64391052 is an abundant number, since it is smaller than the sum of its proper divisors (99513780).

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

64391052 is a wasteful number, since it uses less digits than its factorization.

64391052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487829 (or 487827 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 64391052 is about 8024.4035292351. The cubic root of 64391052 is about 400.8130379701.

The spelling of 64391052 in words is "sixty-four million, three hundred ninety-one thousand, fifty-two".