115220052 has 18 divisors (see below), whose sum is σ = 291250778. Its totient is φ = 38406672.

The previous prime is 115220029. The next prime is 115220057. The reversal of 115220052 is 250022511.

It can be written as a sum of positive squares in only one way, i.e., 115218756 + 1296 = 10734^2 + 36^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115220057) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1600243 + ... + 1600314.

Almost surely, 2^115220052 is an apocalyptic number.

115220052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

115220052 is an abundant number, since it is smaller than the sum of its proper divisors (176030726).

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

115220052 is a wasteful number, since it uses less digits than its factorization.

115220052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3200567 (or 3200562 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 115220052 is about 10734.0603687514. The cubic root of 115220052 is about 486.6043895623.

Adding to 115220052 its reverse (250022511), we get a palindrome (365242563).

The spelling of 115220052 in words is "one hundred fifteen million, two hundred twenty thousand, fifty-two".