2145132155 has 4 divisors (see below), whose sum is σ = 2574158592. Its totient is φ = 1716105720.

The previous prime is 2145132127. The next prime is 2145132173. The reversal of 2145132155 is 5512315412.

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

It is not a de Polignac number, because 2145132155 - 2¹⁴ = 2145115771 is a prime.

It is a Duffinian 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, 214513211 + ... + 214513220.

It is an arithmetic number, because the mean of its divisors is an integer number (643539648).

Almost surely, 2^2145132155 is an apocalyptic number.

2145132155 is a deficient number, since it is larger than the sum of its proper divisors (429026437).

2145132155 is an equidigital number, since it uses as much as digits as its factorization.

2145132155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429026436.

The product of its digits is 6000, while the sum is 29.

The square root of 2145132155 is about 46315.5714096242. The cubic root of 2145132155 is about 1289.6880753342.

Adding to 2145132155 its reverse (5512315412), we get a palindrome (7657447567).

The spelling of 2145132155 in words is "two billion, one hundred forty-five million, one hundred thirty-two thousand, one hundred fifty-five".