501522340 has 96 divisors (see below), whose sum is σ = 1196310528. Its totient is φ = 174960000.

The previous prime is 501522323. The next prime is 501522349. The reversal of 501522340 is 43225105.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (501522349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1029577 + ... + 1030063.

It is an arithmetic number, because the mean of its divisors is an integer number (12461568).

Almost surely, 2^501522340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 501522340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (598155264).

501522340 is an abundant number, since it is smaller than the sum of its proper divisors (694788188).

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

501522340 is a wasteful number, since it uses less digits than its factorization.

501522340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 501522340 is about 22394.6944609655. The cubic root of 501522340 is about 794.5052312183.

Adding to 501522340 its reverse (43225105), we get a palindrome (544747445).

The spelling of 501522340 in words is "five hundred one million, five hundred twenty-two thousand, three hundred forty".