2155415133 has 4 divisors (see below), whose sum is σ = 2873886848. Its totient is φ = 1436943420.

The previous prime is 2155415113. The next prime is 2155415147. The reversal of 2155415133 is 3315145512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2155415133 - 2⁹ = 2155414621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2155415133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155415113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359235853 + ... + 359235858.

It is an arithmetic number, because the mean of its divisors is an integer number (718471712).

Almost surely, 2^2155415133 is an apocalyptic number.

It is an amenable number.

2155415133 is a deficient number, since it is larger than the sum of its proper divisors (718471715).

2155415133 is an equidigital number, since it uses as much as digits as its factorization.

2155415133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718471714.

The product of its digits is 9000, while the sum is 30.

The square root of 2155415133 is about 46426.4486365261. The cubic root of 2155415133 is about 1291.7455553418.

The spelling of 2155415133 in words is "two billion, one hundred fifty-five million, four hundred fifteen thousand, one hundred thirty-three".