445136121 has 8 divisors (see below), whose sum is σ = 659460960. Its totient is φ = 296757396.

The previous prime is 445136119. The next prime is 445136147. The reversal of 445136121 is 121631544.

It is a happy number.

445136121 is a `hidden beast` number, since 4 + 45 + 1 + 3 + 612 + 1 = 666.

It is not a de Polignac number, because 445136121 - 2¹ = 445136119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 16486523 = 445136121 / (4 + 4 + 5 + 1 + 3 + 6 + 1 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (445136101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8243235 + ... + 8243288.

It is an arithmetic number, because the mean of its divisors is an integer number (82432620).

Almost surely, 2^445136121 is an apocalyptic number.

It is an amenable number.

445136121 is a deficient number, since it is larger than the sum of its proper divisors (214324839).

445136121 is a wasteful number, since it uses less digits than its factorization.

445136121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16486532 (or 16486526 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 445136121 is about 21098.2492401621. The cubic root of 445136121 is about 763.5385091797.

Adding to 445136121 its reverse (121631544), we get a palindrome (566767665).

The spelling of 445136121 in words is "four hundred forty-five million, one hundred thirty-six thousand, one hundred twenty-one".