445450553 has 4 divisors (see below), whose sum is σ = 446901840. Its totient is φ = 443999268.

The previous prime is 445450529. The next prime is 445450597. The reversal of 445450553 is 355054544.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 445450553 - 2⁸ = 445450297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (445455553) 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 in 3 ways as a sum of consecutive naturals, for example, 725183 + ... + 725796.

It is an arithmetic number, because the mean of its divisors is an integer number (111725460).

Almost surely, 2^445450553 is an apocalyptic number.

It is an amenable number.

445450553 is a deficient number, since it is larger than the sum of its proper divisors (1451287).

445450553 is a wasteful number, since it uses less digits than its factorization.

445450553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451286.

The product of its (nonzero) digits is 120000, while the sum is 35.

The square root of 445450553 is about 21105.6995382764. The cubic root of 445450553 is about 763.7182477828.

The spelling of 445450553 in words is "four hundred forty-five million, four hundred fifty thousand, five hundred fifty-three".