2145512333 has 2 divisors, whose sum is σ = 2145512334. Its totient is φ = 2145512332.

The previous prime is 2145512309. The next prime is 2145512339. The reversal of 2145512333 is 3332155412.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1431714244 + 713798089 = 37838^2 + 26717^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145512333 - 2⁶ = 2145512269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2145512296 and 2145512305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2145512339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072756166 + 1072756167.

It is an arithmetic number, because the mean of its divisors is an integer number (1072756167).

Almost surely, 2^2145512333 is an apocalyptic number.

It is an amenable number.

2145512333 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145512333 is an equidigital number, since it uses as much as digits as its factorization.

2145512333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 29.

The square root of 2145512333 is about 46319.6754414363. The cubic root of 2145512333 is about 1289.7642605503.

Adding to 2145512333 its reverse (3332155412), we get a palindrome (5477667745).

The spelling of 2145512333 in words is "two billion, one hundred forty-five million, five hundred twelve thousand, three hundred thirty-three".