2115505545 has 8 divisors (see below), whose sum is σ = 3384808896. Its totient is φ = 1128269616.

The previous prime is 2115505531. The next prime is 2115505549. The reversal of 2115505545 is 5455055112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2115505545 - 2⁶ = 2115505481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2115505549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70516837 + ... + 70516866.

It is an arithmetic number, because the mean of its divisors is an integer number (423101112).

Almost surely, 2^2115505545 is an apocalyptic number.

It is an amenable number.

2115505545 is a deficient number, since it is larger than the sum of its proper divisors (1269303351).

2115505545 is a wasteful number, since it uses less digits than its factorization.

2115505545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141033711.

The product of its (nonzero) digits is 25000, while the sum is 33.

The square root of 2115505545 is about 45994.6251751224. The cubic root of 2115505545 is about 1283.7231979429.

The spelling of 2115505545 in words is "two billion, one hundred fifteen million, five hundred five thousand, five hundred forty-five".