551138699 has 2 divisors, whose sum is σ = 551138700. Its totient is φ = 551138698.

The previous prime is 551138669. The next prime is 551138723. The reversal of 551138699 is 996831155.

551138699 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 551138699 - 2¹⁶ = 551073163 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (551138639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275569349 + 275569350.

It is an arithmetic number, because the mean of its divisors is an integer number (275569350).

Almost surely, 2^551138699 is an apocalyptic number.

551138699 is a deficient number, since it is larger than the sum of its proper divisors (1).

551138699 is an equidigital number, since it uses as much as digits as its factorization.

551138699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 291600, while the sum is 47.

The square root of 551138699 is about 23476.3433907412. The cubic root of 551138699 is about 819.8863113254.

The spelling of 551138699 in words is "five hundred fifty-one million, one hundred thirty-eight thousand, six hundred ninety-nine".