501645330 has 48 divisors (see below), whose sum is σ = 1305383040. Its totient is φ = 133658784.

The previous prime is 501645311. The next prime is 501645343. The reversal of 501645330 is 33546105.

It is a super-2 number, since 2×501645330² = 503296074221617800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 501645294 and 501645303.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209319 + ... + 211701.

It is an arithmetic number, because the mean of its divisors is an integer number (27195480).

Almost surely, 2^501645330 is an apocalyptic number.

501645330 is an abundant number, since it is smaller than the sum of its proper divisors (803737710).

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

501645330 is a wasteful number, since it uses less digits than its factorization.

501645330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4735 (or 4732 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 501645330 is about 22397.4402555292. The cubic root of 501645330 is about 794.5701723013.

The spelling of 501645330 in words is "five hundred one million, six hundred forty-five thousand, three hundred thirty".