445273123 has 4 divisors (see below), whose sum is σ = 464632848. Its totient is φ = 425913400.

The previous prime is 445273121. The next prime is 445273183. The reversal of 445273123 is 321372544.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 445273123 - 2¹ = 445273121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445273121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9679828 + ... + 9679873.

It is an arithmetic number, because the mean of its divisors is an integer number (116158212).

Almost surely, 2^445273123 is an apocalyptic number.

445273123 is a deficient number, since it is larger than the sum of its proper divisors (19359725).

445273123 is a wasteful number, since it uses less digits than its factorization.

445273123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19359724.

The product of its digits is 20160, while the sum is 31.

The square root of 445273123 is about 21101.4957526712. The cubic root of 445273123 is about 763.6168339647.

The spelling of 445273123 in words is "four hundred forty-five million, two hundred seventy-three thousand, one hundred twenty-three".