450512131 has 4 divisors (see below), whose sum is σ = 455940072. Its totient is φ = 445084192.

The previous prime is 450512123. The next prime is 450512143. The reversal of 450512131 is 131215054.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131215054 = 2 ⋅65607527.

It is a cyclic number.

It is not a de Polignac number, because 450512131 - 2³ = 450512123 is a prime.

It is a super-2 number, since 2×450512131² = 405922360356322322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450512171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2713846 + ... + 2714011.

It is an arithmetic number, because the mean of its divisors is an integer number (113985018).

Almost surely, 2^450512131 is an apocalyptic number.

450512131 is a deficient number, since it is larger than the sum of its proper divisors (5427941).

450512131 is an equidigital number, since it uses as much as digits as its factorization.

450512131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5427940.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 450512131 is about 21225.2710465615. The cubic root of 450512131 is about 766.6000264908.

Adding to 450512131 its reverse (131215054), we get a palindrome (581727185).

The spelling of 450512131 in words is "four hundred fifty million, five hundred twelve thousand, one hundred thirty-one".