2105550145 has 8 divisors (see below), whose sum is σ = 2546555904. Its totient is φ = 1671176304.

The previous prime is 2105550127. The next prime is 2105550179. The reversal of 2105550145 is 5410555012.

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 2105550145 - 2¹⁵ = 2105517377 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, 1657279 + ... + 1658548.

It is an arithmetic number, because the mean of its divisors is an integer number (318319488).

Almost surely, 2^2105550145 is an apocalyptic number.

It is an amenable number.

2105550145 is a deficient number, since it is larger than the sum of its proper divisors (441005759).

2105550145 is a wasteful number, since it uses less digits than its factorization.

2105550145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315959.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 2105550145 is about 45886.2740370146. The cubic root of 2105550145 is about 1281.7063313022.

The spelling of 2105550145 in words is "two billion, one hundred five million, five hundred fifty thousand, one hundred forty-five".