445267481 has 2 divisors, whose sum is σ = 445267482. Its totient is φ = 445267480.

The previous prime is 445267429. The next prime is 445267531. The reversal of 445267481 is 184762544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 440790025 + 4477456 = 20995^2 + 2116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445267481 is a prime.

It is a super-2 number, since 2×445267481² = 396526259272170722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (445267411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222633740 + 222633741.

It is an arithmetic number, because the mean of its divisors is an integer number (222633741).

Almost surely, 2^445267481 is an apocalyptic number.

It is an amenable number.

445267481 is a deficient number, since it is larger than the sum of its proper divisors (1).

445267481 is an equidigital number, since it uses as much as digits as its factorization.

445267481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 215040, while the sum is 41.

The square root of 445267481 is about 21101.3620650422. The cubic root of 445267481 is about 763.6136087199.

The spelling of 445267481 in words is "four hundred forty-five million, two hundred sixty-seven thousand, four hundred eighty-one".