445355023 has 4 divisors (see below), whose sum is σ = 445472920. Its totient is φ = 445237128.

The previous prime is 445354993. The next prime is 445355039. The reversal of 445355023 is 320553544.

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 445355023 - 2¹³ = 445346831 is a prime.

It is a super-2 number, since 2×445355023² = 396682193022661058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445355063) 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, 53088 + ... + 60901.

It is an arithmetic number, because the mean of its divisors is an integer number (111368230).

Almost surely, 2^445355023 is an apocalyptic number.

445355023 is a deficient number, since it is larger than the sum of its proper divisors (117897).

445355023 is a wasteful number, since it uses less digits than its factorization.

445355023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117896.

The product of its (nonzero) digits is 36000, while the sum is 31.

The square root of 445355023 is about 21103.4362841695. The cubic root of 445355023 is about 763.6636489654.

The spelling of 445355023 in words is "four hundred forty-five million, three hundred fifty-five thousand, twenty-three".