2145154155 has 32 divisors (see below), whose sum is σ = 3510846720. Its totient is φ = 1118110080.

The previous prime is 2145154111. The next prime is 2145154183. The reversal of 2145154155 is 5514515412.

It is a happy number.

It is not a de Polignac number, because 2145154155 - 2⁶ = 2145154091 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146100 + ... + 160110.

It is an arithmetic number, because the mean of its divisors is an integer number (109713960).

Almost surely, 2^2145154155 is an apocalyptic number.

2145154155 is a deficient number, since it is larger than the sum of its proper divisors (1365692565).

2145154155 is a wasteful number, since it uses less digits than its factorization.

2145154155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14251.

The product of its digits is 20000, while the sum is 33.

The square root of 2145154155 is about 46315.8089101335. The cubic root of 2145154155 is about 1289.6924842375.

Adding to 2145154155 its reverse (5514515412), we get a palindrome (7659669567).

The spelling of 2145154155 in words is "two billion, one hundred forty-five million, one hundred fifty-four thousand, one hundred fifty-five".