52172131040 has 24 divisors (see below), whose sum is σ = 123256659960. Its totient is φ = 20868852352.

The previous prime is 52172131031. The next prime is 52172131049. The reversal of 52172131040 is 4013127125.

It is an interprime number because it is at equal distance from previous prime (52172131031) and next prime (52172131049).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52172131049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163037750 + ... + 163038069.

It is an arithmetic number, because the mean of its divisors is an integer number (5135694165).

Almost surely, 2^52172131040 is an apocalyptic number.

It is an amenable number.

52172131040 is an abundant number, since it is smaller than the sum of its proper divisors (71084528920).

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

52172131040 is a wasteful number, since it uses less digits than its factorization.

52172131040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326075834 (or 326075826 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

Adding to 52172131040 its reverse (4013127125), we get a palindrome (56185258165).

The spelling of 52172131040 in words is "fifty-two billion, one hundred seventy-two million, one hundred thirty-one thousand, forty".