551745109291 has 2 divisors, whose sum is σ = 551745109292. Its totient is φ = 551745109290.

The previous prime is 551745109249. The next prime is 551745109337. The reversal of 551745109291 is 192901547155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551745109291 - 2²³ = 551736720683 is a prime.

It is not a weakly prime, because it can be changed into another prime (551745109211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275872554645 + 275872554646.

It is an arithmetic number, because the mean of its divisors is an integer number (275872554646).

Almost surely, 2^551745109291 is an apocalyptic number.

551745109291 is a deficient number, since it is larger than the sum of its proper divisors (1).

551745109291 is an equidigital number, since it uses as much as digits as its factorization.

551745109291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 567000, while the sum is 49.

The spelling of 551745109291 in words is "five hundred fifty-one billion, seven hundred forty-five million, one hundred nine thousand, two hundred ninety-one".