101530500 has 96 divisors (see below), whose sum is σ = 298771200. Its totient is φ = 26790400.

The previous prime is 101530493. The next prime is 101530501. The reversal of 101530500 is 5035101.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 101530500.

It is not an unprimeable number, because it can be changed into a prime (101530501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169201 + ... + 169799.

It is an arithmetic number, because the mean of its divisors is an integer number (3112200).

Almost surely, 2^101530500 is an apocalyptic number.

101530500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101530500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149385600).

101530500 is an abundant number, since it is smaller than the sum of its proper divisors (197240700).

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

101530500 is a wasteful number, since it uses less digits than its factorization.

101530500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 15.

The square root of 101530500 is about 10076.2344156932. The cubic root of 101530500 is about 466.5148882828.

Adding to 101530500 its reverse (5035101), we get a palindrome (106565601).

The spelling of 101530500 in words is "one hundred one million, five hundred thirty thousand, five hundred".