503223104551 has 4 divisors (see below), whose sum is σ = 511472663704. Its totient is φ = 494973545400.

The previous prime is 503223104543. The next prime is 503223104603. The reversal of 503223104551 is 155401322305.

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

It is a cyclic number.

It is not a de Polignac number, because 503223104551 - 2³ = 503223104543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503223164551) 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, 4124779485 + ... + 4124779606.

It is an arithmetic number, because the mean of its divisors is an integer number (127868165926).

Almost surely, 2^503223104551 is an apocalyptic number.

503223104551 is a deficient number, since it is larger than the sum of its proper divisors (8249559153).

503223104551 is an equidigital number, since it uses as much as digits as its factorization.

503223104551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8249559152.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 503223104551 its reverse (155401322305), we get a palindrome (658624426856).

The spelling of 503223104551 in words is "five hundred three billion, two hundred twenty-three million, one hundred four thousand, five hundred fifty-one".