445334557 has 2 divisors, whose sum is σ = 445334558. Its totient is φ = 445334556.

The previous prime is 445334543. The next prime is 445334573. The reversal of 445334557 is 755433544.

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., 238578916 + 206755641 = 15446^2 + 14379^2 .

It is a cyclic number.

It is not a de Polignac number, because 445334557 - 2¹⁵ = 445301789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445334657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222667278 + 222667279.

It is an arithmetic number, because the mean of its divisors is an integer number (222667279).

Almost surely, 2^445334557 is an apocalyptic number.

It is an amenable number.

445334557 is a deficient number, since it is larger than the sum of its proper divisors (1).

445334557 is an equidigital number, since it uses as much as digits as its factorization.

445334557 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 445334557 is about 21102.9513812642. The cubic root of 445334557 is about 763.6519508976.

The spelling of 445334557 in words is "four hundred forty-five million, three hundred thirty-four thousand, five hundred fifty-seven".