2145041555 has 8 divisors (see below), whose sum is σ = 2725464672. Its totient is φ = 1615090048.

The previous prime is 2145041527. The next prime is 2145041593. The reversal of 2145041555 is 5551405412.

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

It is a cyclic number.

It is not a de Polignac number, because 2145041555 - 2⁸ = 2145041299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12617807 + ... + 12617976.

It is an arithmetic number, because the mean of its divisors is an integer number (340683084).

Almost surely, 2^2145041555 is an apocalyptic number.

2145041555 is a deficient number, since it is larger than the sum of its proper divisors (580423117).

2145041555 is a wasteful number, since it uses less digits than its factorization.

2145041555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25235805.

The product of its (nonzero) digits is 20000, while the sum is 32.

The square root of 2145041555 is about 46314.5933265100. The cubic root of 2145041555 is about 1289.6699183511.

Adding to 2145041555 its reverse (5551405412), we get a palindrome (7696446967).

The spelling of 2145041555 in words is "two billion, one hundred forty-five million, forty-one thousand, five hundred fifty-five".