550005555497 has 4 divisors (see below), whose sum is σ = 553696868100. Its totient is φ = 546314242896.

The previous prime is 550005555479. The next prime is 550005555557. The reversal of 550005555497 is 794555500055.

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 24584985616 + 525420569881 = 156796^2 + 724859^2 .

It is a cyclic number.

It is not a de Polignac number, because 550005555497 - 2⁶ = 550005555433 is a prime.

It is a super-2 number, since 2×550005555497² (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 (550005555427) 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, 1845656078 + ... + 1845656375.

It is an arithmetic number, because the mean of its divisors is an integer number (138424217025).

Almost surely, 2^550005555497 is an apocalyptic number.

It is an amenable number.

550005555497 is a deficient number, since it is larger than the sum of its proper divisors (3691312603).

550005555497 is a wasteful number, since it uses less digits than its factorization.

550005555497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3691312602.

The product of its (nonzero) digits is 3937500, while the sum is 50.

The spelling of 550005555497 in words is "five hundred fifty billion, five million, five hundred fifty-five thousand, four hundred ninety-seven".