145766213 has 2 divisors, whose sum is σ = 145766214. Its totient is φ = 145766212.

The previous prime is 145766197. The next prime is 145766227. The reversal of 145766213 is 312667541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106853569 + 38912644 = 10337^2 + 6238^2 .

It is a cyclic number.

It is not a de Polignac number, because 145766213 - 2⁴ = 145766197 is a prime.

It is a super-2 number, since 2×145766213² = 42495577704722738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145766113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72883106 + 72883107.

It is an arithmetic number, because the mean of its divisors is an integer number (72883107).

Almost surely, 2^145766213 is an apocalyptic number.

It is an amenable number.

145766213 is a deficient number, since it is larger than the sum of its proper divisors (1).

145766213 is an equidigital number, since it uses as much as digits as its factorization.

145766213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 145766213 is about 12073.3679228292. The cubic root of 145766213 is about 526.2825338579.

The spelling of 145766213 in words is "one hundred forty-five million, seven hundred sixty-six thousand, two hundred thirteen".