115722500 has 60 divisors (see below), whose sum is σ = 259463820. Its totient is φ = 45120000.

The previous prime is 115722493. The next prime is 115722511. The reversal of 115722500 is 5227511.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 115648516 + 73984 = 10754^2 + 272^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 101936 + ... + 103064.

It is an arithmetic number, because the mean of its divisors is an integer number (4324397).

Almost surely, 2^115722500 is an apocalyptic number.

115722500 is a gapful number since it is divisible by the number (10) 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 115722500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129731910).

115722500 is an abundant number, since it is smaller than the sum of its proper divisors (143741320).

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

115722500 is a wasteful number, since it uses less digits than its factorization.

115722500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194 (or 1177 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 115722500 is about 10757.4392863729. The cubic root of 115722500 is about 487.3106869573.

The spelling of 115722500 in words is "one hundred fifteen million, seven hundred twenty-two thousand, five hundred".