113521156 has 24 divisors (see below), whose sum is σ = 229057920. Its totient is φ = 48220032.

The previous prime is 113521153. The next prime is 113521157. The reversal of 113521156 is 651125311.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 113521156.

It is not an unprimeable number, because it can be changed into a prime (113521151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14776 + ... + 21103.

It is an arithmetic number, because the mean of its divisors is an integer number (9544080).

Almost surely, 2^113521156 is an apocalyptic number.

It is an amenable number.

113521156 is an abundant number, since it is smaller than the sum of its proper divisors (115536764).

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

113521156 is a wasteful number, since it uses less digits than its factorization.

113521156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36003 (or 36001 counting only the distinct ones).

The product of its digits is 900, while the sum is 25.

The square root of 113521156 is about 10654.6307303444. The cubic root of 113521156 is about 484.2009103743.

Adding to 113521156 its reverse (651125311), we get a palindrome (764646467).

The spelling of 113521156 in words is "one hundred thirteen million, five hundred twenty-one thousand, one hundred fifty-six".