550966961 has 2 divisors, whose sum is σ = 550966962. Its totient is φ = 550966960.

The previous prime is 550966951. The next prime is 550966967. The reversal of 550966961 is 169669055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 481144225 + 69822736 = 21935^2 + 8356^2 .

It is a cyclic number.

It is not a de Polignac number, because 550966961 - 2¹⁴ = 550950577 is a prime.

It is a super-2 number, since 2×550966961² = 607129184227151042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (550966967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275483480 + 275483481.

It is an arithmetic number, because the mean of its divisors is an integer number (275483481).

Almost surely, 2^550966961 is an apocalyptic number.

It is an amenable number.

550966961 is a deficient number, since it is larger than the sum of its proper divisors (1).

550966961 is an equidigital number, since it uses as much as digits as its factorization.

550966961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 437400, while the sum is 47.

The square root of 550966961 is about 23472.6854237005. The cubic root of 550966961 is about 819.8011420426.

The spelling of 550966961 in words is "five hundred fifty million, nine hundred sixty-six thousand, nine hundred sixty-one".