445645533 has 4 divisors (see below), whose sum is σ = 594194048. Its totient is φ = 297097020.

The previous prime is 445645489. The next prime is 445645559. The reversal of 445645533 is 335546544.

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 not a de Polignac number, because 445645533 - 2¹⁰ = 445644509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 445645491 and 445645500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445645573) 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, 74274253 + ... + 74274258.

It is an arithmetic number, because the mean of its divisors is an integer number (148548512).

Almost surely, 2^445645533 is an apocalyptic number.

It is an amenable number.

445645533 is a deficient number, since it is larger than the sum of its proper divisors (148548515).

445645533 is a wasteful number, since it uses less digits than its factorization.

445645533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148548514.

The product of its digits is 432000, while the sum is 39.

The square root of 445645533 is about 21110.3181643480. The cubic root of 445645533 is about 763.8296616173.

The spelling of 445645533 in words is "four hundred forty-five million, six hundred forty-five thousand, five hundred thirty-three".