521103453 has 8 divisors (see below), whose sum is σ = 748251168. Its totient is φ = 320679024.

The previous prime is 521103439. The next prime is 521103463. The reversal of 521103453 is 354301125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 521103453 - 2⁶ = 521103389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521103403) 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 7 ways as a sum of consecutive naturals, for example, 6680775 + ... + 6680852.

It is an arithmetic number, because the mean of its divisors is an integer number (93531396).

Almost surely, 2^521103453 is an apocalyptic number.

It is an amenable number.

521103453 is a deficient number, since it is larger than the sum of its proper divisors (227147715).

521103453 is a wasteful number, since it uses less digits than its factorization.

521103453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13361643.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 521103453 is about 22827.6904876512. The cubic root of 521103453 is about 804.7135552236.

Adding to 521103453 its reverse (354301125), we get a palindrome (875404578).

The spelling of 521103453 in words is "five hundred twenty-one million, one hundred three thousand, four hundred fifty-three".