115221053532 has 96 divisors (see below), whose sum is σ = 293117190912. Its totient is φ = 35015371776.

The previous prime is 115221053513. The next prime is 115221053543. The reversal of 115221053532 is 235350122511.

It is a self number, because there is not a number n which added to its sum of digits gives 115221053532.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5614963 + ... + 5635445.

It is an arithmetic number, because the mean of its divisors is an integer number (3053304072).

Almost surely, 2^115221053532 is an apocalyptic number.

115221053532 is a gapful number since it is divisible by the number (12) 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 115221053532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146558595456).

115221053532 is an abundant number, since it is smaller than the sum of its proper divisors (177896137380).

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

115221053532 is a wasteful number, since it uses less digits than its factorization.

115221053532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20947 (or 20945 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The spelling of 115221053532 in words is "one hundred fifteen billion, two hundred twenty-one million, fifty-three thousand, five hundred thirty-two".