450061921 has 4 divisors (see below), whose sum is σ = 450104512. Its totient is φ = 450019332.

The previous prime is 450061919. The next prime is 450061967. The reversal of 450061921 is 129160054.

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 a cyclic number.

It is not a de Polignac number, because 450061921 - 2¹ = 450061919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 450061921.

It is not an unprimeable number, because it can be changed into a prime (450061021) 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, 7876 + ... + 31018.

It is an arithmetic number, because the mean of its divisors is an integer number (112526128).

Almost surely, 2^450061921 is an apocalyptic number.

It is an amenable number.

450061921 is a deficient number, since it is larger than the sum of its proper divisors (42591).

450061921 is a wasteful number, since it uses less digits than its factorization.

450061921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42590.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 450061921 is about 21214.6628773591. The cubic root of 450061921 is about 766.3445794084.

The spelling of 450061921 in words is "four hundred fifty million, sixty-one thousand, nine hundred twenty-one".