5505551 has 2 divisors, whose sum is σ = 5505552. Its totient is φ = 5505550.

The previous prime is 5505547. The next prime is 5505593. The reversal of 5505551 is 1555055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5505551 - 2² = 5505547 is a prime.

It is a super-2 number, since 2×5505551² = 60622183627202, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5505551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5505541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2752775 + 2752776.

It is an arithmetic number, because the mean of its divisors is an integer number (2752776).

Almost surely, 2^5505551 is an apocalyptic number.

5505551 is a deficient number, since it is larger than the sum of its proper divisors (1).

5505551 is an equidigital number, since it uses as much as digits as its factorization.

5505551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3125, while the sum is 26.

The square root of 5505551 is about 2346.3910586260. The cubic root of 5505551 is about 176.5767815372.

The spelling of 5505551 in words is "five million, five hundred five thousand, five hundred fifty-one".