445252513 has 2 divisors, whose sum is σ = 445252514. Its totient is φ = 445252512.

The previous prime is 445252499. The next prime is 445252519. The reversal of 445252513 is 315252544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272514064 + 172738449 = 16508^2 + 13143^2 .

It is a cyclic number.

It is not a de Polignac number, because 445252513 - 2¹⁷ = 445121441 is a prime.

It is not a weakly prime, because it can be changed into another prime (445252519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222626256 + 222626257.

It is an arithmetic number, because the mean of its divisors is an integer number (222626257).

Almost surely, 2^445252513 is an apocalyptic number.

It is an amenable number.

445252513 is a deficient number, since it is larger than the sum of its proper divisors (1).

445252513 is an equidigital number, since it uses as much as digits as its factorization.

445252513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24000, while the sum is 31.

The square root of 445252513 is about 21101.0073930133. The cubic root of 445252513 is about 763.6050521428.

Adding to 445252513 its sum of digits (31), we get a palindrome (445252544).

It can be divided in two parts, 4452 and 52513, that multiplied together give a triangular number (233787876 = T₂₁₆₂₃).

The spelling of 445252513 in words is "four hundred forty-five million, two hundred fifty-two thousand, five hundred thirteen".