501542664 has 32 divisors (see below), whose sum is σ = 1432979520. Its totient is φ = 143297856.

The previous prime is 501542647. The next prime is 501542683. The reversal of 501542664 is 466245105.

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, 1492519 + ... + 1492854.

It is an arithmetic number, because the mean of its divisors is an integer number (44780610).

Almost surely, 2^501542664 is an apocalyptic number.

It is an amenable number.

501542664 is an abundant number, since it is smaller than the sum of its proper divisors (931436856).

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

501542664 is a wasteful number, since it uses less digits than its factorization.

501542664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985389 (or 2985385 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 501542664 is about 22395.1482245597. The cubic root of 501542664 is about 794.5159634130.

Adding to 501542664 its reverse (466245105), we get a palindrome (967787769).

The spelling of 501542664 in words is "five hundred one million, five hundred forty-two thousand, six hundred sixty-four".