551503313377 has 2 divisors, whose sum is σ = 551503313378. Its totient is φ = 551503313376.

The previous prime is 551503313323. The next prime is 551503313381. The reversal of 551503313377 is 773313305155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 550565484001 + 937829376 = 742001^2 + 30624^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551503313377 is a prime.

It is a super-3 number, since 3×551503313377³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (551503313177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275751656688 + 275751656689.

It is an arithmetic number, because the mean of its divisors is an integer number (275751656689).

Almost surely, 2^551503313377 is an apocalyptic number.

It is an amenable number.

551503313377 is a deficient number, since it is larger than the sum of its proper divisors (1).

551503313377 is an equidigital number, since it uses as much as digits as its factorization.

551503313377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 496125, while the sum is 43.

The spelling of 551503313377 in words is "five hundred fifty-one billion, five hundred three million, three hundred thirteen thousand, three hundred seventy-seven".