100520508 has 72 divisors (see below), whose sum is σ = 260620416. Its totient is φ = 30129440.

The previous prime is 100520503. The next prime is 100520509. The reversal of 100520508 is 805025001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100520503) 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 23 ways as a sum of consecutive naturals, for example, 155041 + ... + 155687.

It is an arithmetic number, because the mean of its divisors is an integer number (3619728).

Almost surely, 2^100520508 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 100520508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130310208).

100520508 is an abundant number, since it is smaller than the sum of its proper divisors (160099908).

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

100520508 is a wasteful number, since it uses less digits than its factorization.

100520508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783 (or 770 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 100520508 is about 10025.9916217799. The cubic root of 100520508 is about 464.9628181624.

Adding to 100520508 its reverse (805025001), we get a palindrome (905545509).

The spelling of 100520508 in words is "one hundred million, five hundred twenty thousand, five hundred eight".