2145551045 has 16 divisors (see below), whose sum is σ = 2973941568. Its totient is φ = 1468611840.

The previous prime is 2145551029. The next prime is 2145551069. The reversal of 2145551045 is 5401555412.

It is not a de Polignac number, because 2145551045 - 2⁴ = 2145551029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1146419 + ... + 1148288.

It is an arithmetic number, because the mean of its divisors is an integer number (185871348).

Almost surely, 2^2145551045 is an apocalyptic number.

It is an amenable number.

2145551045 is a deficient number, since it is larger than the sum of its proper divisors (828390523).

2145551045 is a wasteful number, since it uses less digits than its factorization.

2145551045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294740.

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

The square root of 2145551045 is about 46320.0933181271. The cubic root of 2145551045 is about 1289.7720176802.

The spelling of 2145551045 in words is "two billion, one hundred forty-five million, five hundred fifty-one thousand, forty-five".