551703949 has 2 divisors, whose sum is σ = 551703950. Its totient is φ = 551703948.

The previous prime is 551703853. The next prime is 551703961. The reversal of 551703949 is 949307155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 279123849 + 272580100 = 16707^2 + 16510^2 .

It is a cyclic number.

It is not a de Polignac number, because 551703949 - 2²¹ = 549606797 is a prime.

It is a super-3 number, since 3×551703949³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551703979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275851974 + 275851975.

It is an arithmetic number, because the mean of its divisors is an integer number (275851975).

Almost surely, 2^551703949 is an apocalyptic number.

It is an amenable number.

551703949 is a deficient number, since it is larger than the sum of its proper divisors (1).

551703949 is an equidigital number, since it uses as much as digits as its factorization.

551703949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 170100, while the sum is 43.

The square root of 551703949 is about 23488.3790202730. The cubic root of 551703949 is about 820.1665084234.

The spelling of 551703949 in words is "five hundred fifty-one million, seven hundred three thousand, nine hundred forty-nine".