115541001 has 9 divisors (see below), whose sum is σ = 166939149. Its totient is φ = 77005836.

The previous prime is 115540979. The next prime is 115541003. The reversal of 115541001 is 100145511.

It is a happy number.

The square root of 115541001 is 10749.

It is a perfect power (a square), and thus also a powerful number.

115541001 is a `hidden beast` number, since 11 + 554 + 100 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 115541001 - 2⁹ = 115540489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115541003) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 30456 + ... + 34038.

Almost surely, 2^115541001 is an apocalyptic number.

115541001 is the 10749-th square number.

115541001 is the 5375-th centered octagonal number.

It is an amenable number.

115541001 is a deficient number, since it is larger than the sum of its proper divisors (51398148).

115541001 is an frugal number, since it uses more digits than its factorization.

115541001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7172 (or 3586 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The cubic root of 115541001 is about 487.0557878598.

Multiplying 115541001 by its product of nonzero digits (100), we get a square (11554100100 = 107490²).

Adding to 115541001 its reverse (100145511), we get a palindrome (215686512).

The spelling of 115541001 in words is "one hundred fifteen million, five hundred forty-one thousand, one".