2155415135 has 4 divisors (see below), whose sum is σ = 2586498168. Its totient is φ = 1724332104.

The previous prime is 2155415113. The next prime is 2155415147. The reversal of 2155415135 is 5315145512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2155415135 - 2²⁶ = 2088306271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215541509 + ... + 215541518.

It is an arithmetic number, because the mean of its divisors is an integer number (646624542).

Almost surely, 2^2155415135 is an apocalyptic number.

2155415135 is a deficient number, since it is larger than the sum of its proper divisors (431083033).

2155415135 is an equidigital number, since it uses as much as digits as its factorization.

2155415135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431083032.

The product of its digits is 15000, while the sum is 32.

The square root of 2155415135 is about 46426.4486580656. The cubic root of 2155415135 is about 1291.7455557413.

The spelling of 2155415135 in words is "two billion, one hundred fifty-five million, four hundred fifteen thousand, one hundred thirty-five".