115220558 has 4 divisors (see below), whose sum is σ = 172830840. Its totient is φ = 57610278.

The previous prime is 115220551. The next prime is 115220587. The reversal of 115220558 is 855022511.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×115220558³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 115220558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115220551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28805138 + ... + 28805141.

It is an arithmetic number, because the mean of its divisors is an integer number (43207710).

Almost surely, 2^115220558 is an apocalyptic number.

115220558 is a deficient number, since it is larger than the sum of its proper divisors (57610282).

115220558 is an equidigital number, since it uses as much as digits as its factorization.

115220558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57610281.

The product of its (nonzero) digits is 4000, while the sum is 29.

The square root of 115220558 is about 10734.0839385576. The cubic root of 115220558 is about 486.6051018846.

The spelling of 115220558 in words is "one hundred fifteen million, two hundred twenty thousand, five hundred fifty-eight".