555113121 has 8 divisors (see below), whose sum is σ = 783689184. Its totient is φ = 348306240.

The previous prime is 555113113. The next prime is 555113131. The reversal of 555113121 is 121311555.

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

It is not a de Polignac number, because 555113121 - 2³ = 555113113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 555113091 and 555113100.

It is not an unprimeable number, because it can be changed into a prime (555113131) 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, 5442235 + ... + 5442336.

It is an arithmetic number, because the mean of its divisors is an integer number (97961148).

Almost surely, 2^555113121 is an apocalyptic number.

555113121 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

555113121 is a deficient number, since it is larger than the sum of its proper divisors (228576063).

555113121 is a wasteful number, since it uses less digits than its factorization.

555113121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10884591.

The product of its digits is 750, while the sum is 24.

The square root of 555113121 is about 23560.8387159710. The cubic root of 555113121 is about 821.8524059984.

Adding to 555113121 its reverse (121311555), we get a palindrome (676424676).

The spelling of 555113121 in words is "five hundred fifty-five million, one hundred thirteen thousand, one hundred twenty-one".