551872840997 has 2 divisors, whose sum is σ = 551872840998. Its totient is φ = 551872840996.

The previous prime is 551872840991. The next prime is 551872841011. The reversal of 551872840997 is 799048278155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 285445501441 + 266427339556 = 534271^2 + 516166^2 .

It is a cyclic number.

It is not a de Polignac number, because 551872840997 - 2³⁰ = 550799099173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551872840991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275936420498 + 275936420499.

It is an arithmetic number, because the mean of its divisors is an integer number (275936420499).

Almost surely, 2^551872840997 is an apocalyptic number.

It is an amenable number.

551872840997 is a deficient number, since it is larger than the sum of its proper divisors (1).

551872840997 is an equidigital number, since it uses as much as digits as its factorization.

551872840997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50803200, while the sum is 65.

The spelling of 551872840997 in words is "five hundred fifty-one billion, eight hundred seventy-two million, eight hundred forty thousand, nine hundred ninety-seven".