450201523 has 4 divisors (see below), whose sum is σ = 473896360. Its totient is φ = 426506688.

The previous prime is 450201511. The next prime is 450201547. The reversal of 450201523 is 325102054.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450201523 is a prime.

It is a super-2 number, since 2×450201523² = 405362822623039058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 450201494 and 450201503.

It is not an unprimeable number, because it can be changed into a prime (450201503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11847390 + ... + 11847427.

It is an arithmetic number, because the mean of its divisors is an integer number (118474090).

Almost surely, 2^450201523 is an apocalyptic number.

450201523 is a deficient number, since it is larger than the sum of its proper divisors (23694837).

450201523 is a wasteful number, since it uses less digits than its factorization.

450201523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23694836.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 450201523 is about 21217.9528465873. The cubic root of 450201523 is about 766.4238071557.

Adding to 450201523 its reverse (325102054), we get a palindrome (775303577).

The spelling of 450201523 in words is "four hundred fifty million, two hundred one thousand, five hundred twenty-three".