445343557 has 2 divisors, whose sum is σ = 445343558. Its totient is φ = 445343556.

The previous prime is 445343513. The next prime is 445343609. The reversal of 445343557 is 755343544.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 433722276 + 11621281 = 20826^2 + 3409^2 .

It is a cyclic number.

It is not a de Polignac number, because 445343557 - 2⁷ = 445343429 is a prime.

It is a super-2 number, since 2×445343557² = 396661767522824498, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445343257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222671778 + 222671779.

It is an arithmetic number, because the mean of its divisors is an integer number (222671779).

Almost surely, 2^445343557 is an apocalyptic number.

It is an amenable number.

445343557 is a deficient number, since it is larger than the sum of its proper divisors (1).

445343557 is an equidigital number, since it uses as much as digits as its factorization.

445343557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504000, while the sum is 40.

The square root of 445343557 is about 21103.1646205018. The cubic root of 445343557 is about 763.6570952108.

The spelling of 445343557 in words is "four hundred forty-five million, three hundred forty-three thousand, five hundred fifty-seven".