51531445223 has 8 divisors (see below), whose sum is σ = 53345275680. Its totient is φ = 49720073760.

The previous prime is 51531445201. The next prime is 51531445243. The reversal of 51531445223 is 32254413515.

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

It is a cyclic number.

It is not a de Polignac number, because 51531445223 - 2⁸ = 51531444967 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 (51531445243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 572048 + ... + 655973.

It is an arithmetic number, because the mean of its divisors is an integer number (6668159460).

Almost surely, 2^51531445223 is an apocalyptic number.

51531445223 is a deficient number, since it is larger than the sum of its proper divisors (1813830457).

51531445223 is a wasteful number, since it uses less digits than its factorization.

51531445223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229497.

The product of its digits is 72000, while the sum is 35.

Adding to 51531445223 its reverse (32254413515), we get a palindrome (83785858738).

The spelling of 51531445223 in words is "fifty-one billion, five hundred thirty-one million, four hundred forty-five thousand, two hundred twenty-three".