445045421 has 4 divisors (see below), whose sum is σ = 449204832. Its totient is φ = 440886012.

The previous prime is 445045411. The next prime is 445045427. The reversal of 445045421 is 124540544.

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 445045421 - 2⁶ = 445045357 is a prime.

It is a super-3 number, since 3×445045421³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445045427) 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, 2079545 + ... + 2079758.

It is an arithmetic number, because the mean of its divisors is an integer number (112301208).

Almost surely, 2^445045421 is an apocalyptic number.

It is an amenable number.

445045421 is a deficient number, since it is larger than the sum of its proper divisors (4159411).

445045421 is a wasteful number, since it uses less digits than its factorization.

445045421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4159410.

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 445045421 is about 21096.0996632079. The cubic root of 445045421 is about 763.4866466567.

Adding to 445045421 its reverse (124540544), we get a palindrome (569585965).

The spelling of 445045421 in words is "four hundred forty-five million, forty-five thousand, four hundred twenty-one".