115505151 has 4 divisors (see below), whose sum is σ = 154006872. Its totient is φ = 77003432.

The previous prime is 115505141. The next prime is 115505153. The reversal of 115505151 is 151505511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151505511 = 3 ⋅50501837.

It is a cyclic number.

It is not a de Polignac number, because 115505151 - 2⁶ = 115505087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115505153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19250856 + ... + 19250861.

It is an arithmetic number, because the mean of its divisors is an integer number (38501718).

Almost surely, 2^115505151 is an apocalyptic number.

115505151 is a deficient number, since it is larger than the sum of its proper divisors (38501721).

115505151 is an equidigital number, since it uses as much as digits as its factorization.

115505151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38501720.

The product of its (nonzero) digits is 625, while the sum is 24.

The square root of 115505151 is about 10747.3322736389. The cubic root of 115505151 is about 487.0054081791.

The spelling of 115505151 in words is "one hundred fifteen million, five hundred five thousand, one hundred fifty-one".