445541 has 2 divisors, whose sum is σ = 445542. Its totient is φ = 445540.

The previous prime is 445537. The next prime is 445567. The reversal of 445541 is 145544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 372100 + 73441 = 610^2 + 271^2 .

It is a cyclic number.

It is not a de Polignac number, because 445541 - 2² = 445537 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222770 + 222771.

It is an arithmetic number, because the mean of its divisors is an integer number (222771).

2⁴⁴⁵⁵⁴¹ is an apocalyptic number.

It is an amenable number.

445541 is a deficient number, since it is larger than the sum of its proper divisors (1).

445541 is an equidigital number, since it uses as much as digits as its factorization.

445541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1600, while the sum is 23.

The square root of 445541 is about 667.4885766813. The cubic root of 445541 is about 76.3769934290.

The spelling of 445541 in words is "four hundred forty-five thousand, five hundred forty-one".