52131512 has 8 divisors (see below), whose sum is σ = 97746600. Its totient is φ = 26065752.

The previous prime is 52131509. The next prime is 52131517. The reversal of 52131512 is 21513125.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×52131512² = 5435389086812288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52131517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3258212 + ... + 3258227.

It is an arithmetic number, because the mean of its divisors is an integer number (12218325).

Almost surely, 2^52131512 is an apocalyptic number.

It is an amenable number.

52131512 is a deficient number, since it is larger than the sum of its proper divisors (45615088).

52131512 is a wasteful number, since it uses less digits than its factorization.

52131512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6516445 (or 6516441 counting only the distinct ones).

The product of its digits is 300, while the sum is 20.

The square root of 52131512 is about 7220.2155092490. The cubic root of 52131512 is about 373.5655110482.

Adding to 52131512 its reverse (21513125), we get a palindrome (73644637).

The spelling of 52131512 in words is "fifty-two million, one hundred thirty-one thousand, five hundred twelve".