555055505509 has 4 divisors (see below), whose sum is σ = 560444394016. Its totient is φ = 549666617004.

The previous prime is 555055505491. The next prime is 555055505527. The reversal of 555055505509 is 905505550555.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (555055505491) and next prime (555055505527).

It is a cyclic number.

It is not a de Polignac number, because 555055505509 - 2²³ = 555047116901 is a prime.

It is a super-2 number, since 2×555055505509² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555055505539) 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, 2694444099 + ... + 2694444304.

It is an arithmetic number, because the mean of its divisors is an integer number (140111098504).

Almost surely, 2^555055505509 is an apocalyptic number.

It is an amenable number.

555055505509 is a deficient number, since it is larger than the sum of its proper divisors (5388888507).

555055505509 is a wasteful number, since it uses less digits than its factorization.

555055505509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5388888506.

The product of its (nonzero) digits is 3515625, while the sum is 49.

The spelling of 555055505509 in words is "five hundred fifty-five billion, fifty-five million, five hundred five thousand, five hundred nine".