445315253 has 2 divisors, whose sum is σ = 445315254. Its totient is φ = 445315252.

The previous prime is 445315237. The next prime is 445315261. The reversal of 445315253 is 352513544.

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., 441084004 + 4231249 = 21002^2 + 2057^2 .

It is a cyclic number.

It is not a de Polignac number, because 445315253 - 2⁴ = 445315237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445317253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222657626 + 222657627.

It is an arithmetic number, because the mean of its divisors is an integer number (222657627).

Almost surely, 2^445315253 is an apocalyptic number.

It is an amenable number.

445315253 is a deficient number, since it is larger than the sum of its proper divisors (1).

445315253 is an equidigital number, since it uses as much as digits as its factorization.

445315253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 32.

The square root of 445315253 is about 21102.4939995253. The cubic root of 445315253 is about 763.6409166838.

Adding to 445315253 its reverse (352513544), we get a palindrome (797828797).

The spelling of 445315253 in words is "four hundred forty-five million, three hundred fifteen thousand, two hundred fifty-three".