501616530 has 128 divisors (see below), whose sum is σ = 1417132800. Its totient is φ = 125908992.

The previous prime is 501616529. The next prime is 501616547. The reversal of 501616530 is 35616105.

It is a happy number.

501616530 is a `hidden beast` number, since 5 + 0 + 1 + 6 + 1 + 653 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 501616494 and 501616503.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1420834 + ... + 1421186.

It is an arithmetic number, because the mean of its divisors is an integer number (11071350).

Almost surely, 2^501616530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 501616530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (708566400).

501616530 is an abundant number, since it is smaller than the sum of its proper divisors (915516270).

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

501616530 is a wasteful number, since it uses less digits than its factorization.

501616530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665 (or 659 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 501616530 is about 22396.7973156878. The cubic root of 501616530 is about 794.5549662998.

The spelling of 501616530 in words is "five hundred one million, six hundred sixteen thousand, five hundred thirty".