445136091 has 4 divisors (see below), whose sum is σ = 593514792. Its totient is φ = 296757392.

The previous prime is 445136063. The next prime is 445136101. The reversal of 445136091 is 190631544.

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 445136091 - 2¹¹ = 445134043 is a prime.

It is a super-2 number, since 2×445136091² = 396292279021520562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (445136191) 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, 74189346 + ... + 74189351.

It is an arithmetic number, because the mean of its divisors is an integer number (148378698).

Almost surely, 2^445136091 is an apocalyptic number.

445136091 is a deficient number, since it is larger than the sum of its proper divisors (148378701).

445136091 is a wasteful number, since it uses less digits than its factorization.

445136091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148378700.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 445136091 is about 21098.2485292026. The cubic root of 445136091 is about 763.5384920267.

The spelling of 445136091 in words is "four hundred forty-five million, one hundred thirty-six thousand, ninety-one".