505555601233 has 4 divisors (see below), whose sum is σ = 505558929060. Its totient is φ = 505552273408.

The previous prime is 505555601171. The next prime is 505555601251. The reversal of 505555601233 is 332106555505.

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

It can be written as a sum of positive squares in 2 ways, for example, as 142274559249 + 363281041984 = 377193^2 + 602728^2 .

It is a cyclic number.

It is not a de Polignac number, because 505555601233 - 2¹³ = 505555593041 is a prime.

It is a super-2 number, since 2×505555601233² (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 (505555601273) 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, 1424560 + ... + 1743697.

It is an arithmetic number, because the mean of its divisors is an integer number (126389732265).

Almost surely, 2^505555601233 is an apocalyptic number.

It is an amenable number.

505555601233 is a deficient number, since it is larger than the sum of its proper divisors (3327827).

505555601233 is a wasteful number, since it uses less digits than its factorization.

505555601233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3327826.

The product of its (nonzero) digits is 337500, while the sum is 40.

The spelling of 505555601233 in words is "five hundred five billion, five hundred fifty-five million, six hundred one thousand, two hundred thirty-three".