445545121 has 8 divisors (see below), whose sum is σ = 531333504. Its totient is φ = 365291520.

The previous prime is 445545103. The next prime is 445545137. The reversal of 445545121 is 121545544.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 445545121 - 2⁹ = 445544609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445546121) 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, 1383520 + ... + 1383841.

It is an arithmetic number, because the mean of its divisors is an integer number (66416688).

Almost surely, 2^445545121 is an apocalyptic number.

It is an amenable number.

445545121 is a deficient number, since it is larger than the sum of its proper divisors (85788383).

445545121 is a wasteful number, since it uses less digits than its factorization.

445545121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2767391.

The product of its digits is 16000, while the sum is 31.

The square root of 445545121 is about 21107.9397620895. The cubic root of 445545121 is about 763.7722890948.

The spelling of 445545121 in words is "four hundred forty-five million, five hundred forty-five thousand, one hundred twenty-one".