115571145 has 16 divisors (see below), whose sum is σ = 186266880. Its totient is φ = 61186944.

The previous prime is 115571107. The next prime is 115571153. The reversal of 115571145 is 541175511.

It is not a de Polignac number, because 115571145 - 2¹⁰ = 115570121 is a prime.

It is a super-2 number, since 2×115571145² = 26713379113222050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26065 + ... + 30174.

It is an arithmetic number, because the mean of its divisors is an integer number (11641680).

Almost surely, 2^115571145 is an apocalyptic number.

115571145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115571145 is a deficient number, since it is larger than the sum of its proper divisors (70695735).

115571145 is a wasteful number, since it uses less digits than its factorization.

115571145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56384.

The product of its digits is 3500, while the sum is 30.

The square root of 115571145 is about 10750.4020855036. The cubic root of 115571145 is about 487.0981408858.

The spelling of 115571145 in words is "one hundred fifteen million, five hundred seventy-one thousand, one hundred forty-five".