450122513 has 4 divisors (see below), whose sum is σ = 452454948. Its totient is φ = 447790080.

The previous prime is 450122509. The next prime is 450122551. The reversal of 450122513 is 315221054.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 315221054 = 2 ⋅157610527.

It can be written as a sum of positive squares in 2 ways, for example, as 262213249 + 187909264 = 16193^2 + 13708^2 .

It is a cyclic number.

It is not a de Polignac number, because 450122513 - 2² = 450122509 is a prime.

It is a super-2 number, since 2×450122513² = 405220553418870338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450122503) 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, 1165928 + ... + 1166313.

It is an arithmetic number, because the mean of its divisors is an integer number (113113737).

Almost surely, 2^450122513 is an apocalyptic number.

It is an amenable number.

450122513 is a deficient number, since it is larger than the sum of its proper divisors (2332435).

450122513 is a wasteful number, since it uses less digits than its factorization.

450122513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332434.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 450122513 is about 21216.0908981839. The cubic root of 450122513 is about 766.3789689483.

Adding to 450122513 its reverse (315221054), we get a palindrome (765343567).

The spelling of 450122513 in words is "four hundred fifty million, one hundred twenty-two thousand, five hundred thirteen".