52131500 has 48 divisors (see below), whose sum is σ = 116678016. Its totient is φ = 20336000.

The previous prime is 52131487. The next prime is 52131509. The reversal of 52131500 is 513125.

It is not an unprimeable number, because it can be changed into a prime (52131509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19229 + ... + 21771.

It is an arithmetic number, because the mean of its divisors is an integer number (2430792).

Almost surely, 2^52131500 is an apocalyptic number.

52131500 is a gapful number since it is divisible by the number (50) 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 52131500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58339008).

52131500 is an abundant number, since it is smaller than the sum of its proper divisors (64546516).

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

52131500 is a wasteful number, since it uses less digits than its factorization.

52131500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2603 (or 2591 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 52131500 is about 7220.2146782488. The cubic root of 52131500 is about 373.5654823849.

Adding to 52131500 its reverse (513125), we get a palindrome (52644625).

The spelling of 52131500 in words is "fifty-two million, one hundred thirty-one thousand, five hundred".