445232561 has 4 divisors (see below), whose sum is σ = 445276224. Its totient is φ = 445188900.

The previous prime is 445232549. The next prime is 445232573. The reversal of 445232561 is 165232544.

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, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (445232549) and next prime (445232573).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445232561 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 (445232531) 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, 2516 + ... + 29946.

It is an arithmetic number, because the mean of its divisors is an integer number (111319056).

Almost surely, 2^445232561 is an apocalyptic number.

It is an amenable number.

445232561 is a deficient number, since it is larger than the sum of its proper divisors (43663).

445232561 is a wasteful number, since it uses less digits than its factorization.

445232561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43662.

The product of its digits is 28800, while the sum is 32.

The square root of 445232561 is about 21100.5346140803. The cubic root of 445232561 is about 763.5936461241.

The spelling of 445232561 in words is "four hundred forty-five million, two hundred thirty-two thousand, five hundred sixty-one".