2151445333 has 2 divisors, whose sum is σ = 2151445334. Its totient is φ = 2151445332.

The previous prime is 2151445267. The next prime is 2151445393. The reversal of 2151445333 is 3335441512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1552517604 + 598927729 = 39402^2 + 24473^2 .

It is a cyclic number.

It is not a de Polignac number, because 2151445333 - 2²⁹ = 1614574421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2151445295 and 2151445304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2151445393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075722666 + 1075722667.

It is an arithmetic number, because the mean of its divisors is an integer number (1075722667).

Almost surely, 2^2151445333 is an apocalyptic number.

It is an amenable number.

2151445333 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151445333 is an equidigital number, since it uses as much as digits as its factorization.

2151445333 is an evil number, because the sum of its binary digits is even.

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

The square root of 2151445333 is about 46383.6752856002. The cubic root of 2151445333 is about 1290.9520310302.

Adding to 2151445333 its reverse (3335441512), we get a palindrome (5486886845).

The spelling of 2151445333 in words is "two billion, one hundred fifty-one million, four hundred forty-five thousand, three hundred thirty-three".