115571556 has 96 divisors (see below), whose sum is σ = 308810880. Its totient is φ = 37366272.

The previous prime is 115571551. The next prime is 115571563. The reversal of 115571556 is 655175511.

It is a happy number.

It is a super-2 number, since 2×115571556² = 26713569112522272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 115571556.

It is not an unprimeable number, because it can be changed into a prime (115571551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 843520 + ... + 843656.

It is an arithmetic number, because the mean of its divisors is an integer number (3216780).

Almost surely, 2^115571556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115571556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154405440).

115571556 is an abundant number, since it is smaller than the sum of its proper divisors (193239324).

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

115571556 is a wasteful number, since it uses less digits than its factorization.

115571556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 322 counting only the distinct ones).

The product of its digits is 26250, while the sum is 36.

The square root of 115571556 is about 10750.4212010507. The cubic root of 115571556 is about 487.0987182995.

The spelling of 115571556 in words is "one hundred fifteen million, five hundred seventy-one thousand, five hundred fifty-six".