2175046145 has 4 divisors (see below), whose sum is σ = 2610055380. Its totient is φ = 1740036912.

The previous prime is 2175046123. The next prime is 2175046177. The reversal of 2175046145 is 5416405712.

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

It can be written as a sum of positive squares in 2 ways, for example, as 748624321 + 1426421824 = 27361^2 + 37768^2 .

It is a cyclic number.

It is not a de Polignac number, because 2175046145 - 2⁸ = 2175045889 is a prime.

It is a super-2 number, since 2×2175046145² = 9461651465758722050, which contains 22 as substring.

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, 217504610 + ... + 217504619.

It is an arithmetic number, because the mean of its divisors is an integer number (652513845).

Almost surely, 2^2175046145 is an apocalyptic number.

It is an amenable number.

2175046145 is a deficient number, since it is larger than the sum of its proper divisors (435009235).

2175046145 is an equidigital number, since it uses as much as digits as its factorization.

2175046145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435009234.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 2175046145 is about 46637.3899891493. The cubic root of 2175046145 is about 1295.6553472545.

The spelling of 2175046145 in words is "two billion, one hundred seventy-five million, forty-six thousand, one hundred forty-five".