551205223513 has 8 divisors (see below), whose sum is σ = 630002248128. Its totient is φ = 472421554224.

The previous prime is 551205223493. The next prime is 551205223567. The reversal of 551205223513 is 315322502155.

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 551205223513 - 2³³ = 542615288921 is a prime.

It is a super-2 number, since 2×551205223513² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551205223213) 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, 3250231 + ... + 3415612.

It is an arithmetic number, because the mean of its divisors is an integer number (78750281016).

Almost surely, 2^551205223513 is an apocalyptic number.

It is an amenable number.

551205223513 is a deficient number, since it is larger than the sum of its proper divisors (78797024615).

551205223513 is a wasteful number, since it uses less digits than its factorization.

551205223513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6677663.

The product of its (nonzero) digits is 45000, while the sum is 34.

Adding to 551205223513 its reverse (315322502155), we get a palindrome (866527725668).

The spelling of 551205223513 in words is "five hundred fifty-one billion, two hundred five million, two hundred twenty-three thousand, five hundred thirteen".