450055121 has 4 divisors (see below), whose sum is σ = 450531312. Its totient is φ = 449578932.

The previous prime is 450055097. The next prime is 450055129. The reversal of 450055121 is 121550054.

It is a happy number.

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 an emirpimes, since its reverse is a distinct semiprime: 121550054 = 2 ⋅60775027.

It is a cyclic number.

It is not a de Polignac number, because 450055121 - 2²⁶ = 382946257 is a prime.

It is a super-2 number, since 2×450055121² = 405099223876649282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450055129) 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, 236675 + ... + 238568.

It is an arithmetic number, because the mean of its divisors is an integer number (112632828).

Almost surely, 2^450055121 is an apocalyptic number.

It is an amenable number.

450055121 is a deficient number, since it is larger than the sum of its proper divisors (476191).

450055121 is an equidigital number, since it uses as much as digits as its factorization.

450055121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476190.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 450055121 is about 21214.5026102428. The cubic root of 450055121 is about 766.3407198141.

The spelling of 450055121 in words is "four hundred fifty million, fifty-five thousand, one hundred twenty-one".