551404417 has 2 divisors, whose sum is σ = 551404418. Its totient is φ = 551404416.

The previous prime is 551404391. The next prime is 551404433. The reversal of 551404417 is 714404155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 432681601 + 118722816 = 20801^2 + 10896^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551404417 is a prime.

It is not a weakly prime, because it can be changed into another prime (551404487) 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, 275702208 + 275702209.

It is an arithmetic number, because the mean of its divisors is an integer number (275702209).

Almost surely, 2^551404417 is an apocalyptic number.

It is an amenable number.

551404417 is a deficient number, since it is larger than the sum of its proper divisors (1).

551404417 is an equidigital number, since it uses as much as digits as its factorization.

551404417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 551404417 is about 23482.0019802401. The cubic root of 551404417 is about 820.0180528447.

The spelling of 551404417 in words is "five hundred fifty-one million, four hundred four thousand, four hundred seventeen".