445102121 has 4 divisors (see below), whose sum is σ = 460450500. Its totient is φ = 429753744.

The previous prime is 445102111. The next prime is 445102127. The reversal of 445102121 is 121201544.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 178596496 + 266505625 = 13364^2 + 16325^2 .

It is a cyclic number.

It is not a de Polignac number, because 445102121 - 2²⁶ = 377993257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 445102093 and 445102102.

It is not an unprimeable number, because it can be changed into a prime (445102127) 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, 7674146 + ... + 7674203.

It is an arithmetic number, because the mean of its divisors is an integer number (115112625).

Almost surely, 2^445102121 is an apocalyptic number.

It is an amenable number.

445102121 is a deficient number, since it is larger than the sum of its proper divisors (15348379).

445102121 is a wasteful number, since it uses less digits than its factorization.

445102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15348378.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 445102121 is about 21097.4434707146. The cubic root of 445102121 is about 763.5190687066.

Adding to 445102121 its reverse (121201544), we get a palindrome (566303665).

The spelling of 445102121 in words is "four hundred forty-five million, one hundred two thousand, one hundred twenty-one".