550979551 has 2 divisors, whose sum is σ = 550979552. Its totient is φ = 550979550.

The previous prime is 550979491. The next prime is 550979563. The reversal of 550979551 is 155979055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 550979551 - 2¹⁵ = 550946783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550979591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275489775 + 275489776.

It is an arithmetic number, because the mean of its divisors is an integer number (275489776).

Almost surely, 2^550979551 is an apocalyptic number.

550979551 is a deficient number, since it is larger than the sum of its proper divisors (1).

550979551 is an equidigital number, since it uses as much as digits as its factorization.

550979551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 354375, while the sum is 46.

The square root of 550979551 is about 23472.9536062252. The cubic root of 550979551 is about 819.8073863480.

The spelling of 550979551 in words is "five hundred fifty million, nine hundred seventy-nine thousand, five hundred fifty-one".