2145145333 has 4 divisors (see below), whose sum is σ = 2153492460. Its totient is φ = 2136798208.

The previous prime is 2145145313. The next prime is 2145145351. The reversal of 2145145333 is 3335415412.

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 2123550724 + 21594609 = 46082^2 + 4647^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2145145333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2145145295 and 2145145304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145145313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4173178 + ... + 4173691.

It is an arithmetic number, because the mean of its divisors is an integer number (538373115).

Almost surely, 2^2145145333 is an apocalyptic number.

It is an amenable number.

2145145333 is a deficient number, since it is larger than the sum of its proper divisors (8347127).

2145145333 is an equidigital number, since it uses as much as digits as its factorization.

2145145333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8347126.

The product of its digits is 21600, while the sum is 31.

The square root of 2145145333 is about 46315.7136725755. The cubic root of 2145145333 is about 1289.6907162709.

The spelling of 2145145333 in words is "two billion, one hundred forty-five million, one hundred forty-five thousand, three hundred thirty-three".