450361721 has 4 divisors (see below), whose sum is σ = 450633552. Its totient is φ = 450089892.

The previous prime is 450361687. The next prime is 450361729. The reversal of 450361721 is 127163054.

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.

It is a cyclic number.

It is not a de Polignac number, because 450361721 - 2²² = 446167417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450361729) 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, 133415 + ... + 136748.

It is an arithmetic number, because the mean of its divisors is an integer number (112658388).

Almost surely, 2^450361721 is an apocalyptic number.

It is an amenable number.

450361721 is a deficient number, since it is larger than the sum of its proper divisors (271831).

450361721 is a wasteful number, since it uses less digits than its factorization.

450361721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271830.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 450361721 is about 21221.7275686971. The cubic root of 450361721 is about 766.5147034873.

The spelling of 450361721 in words is "four hundred fifty million, three hundred sixty-one thousand, seven hundred twenty-one".