55549177 has 2 divisors, whose sum is σ = 55549178. Its totient is φ = 55549176.

The previous prime is 55549133. The next prime is 55549187. The reversal of 55549177 is 77194555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52577001 + 2972176 = 7251^2 + 1724^2 .

It is a cyclic number.

It is not a de Polignac number, because 55549177 - 2²³ = 47160569 is a prime.

It is a super-2 number, since 2×55549177² = 6171422130754658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55549187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27774588 + 27774589.

It is an arithmetic number, because the mean of its divisors is an integer number (27774589).

Almost surely, 2^55549177 is an apocalyptic number.

It is an amenable number.

55549177 is a deficient number, since it is larger than the sum of its proper divisors (1).

55549177 is an equidigital number, since it uses as much as digits as its factorization.

55549177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 220500, while the sum is 43.

The square root of 55549177 is about 7453.1320262021. The cubic root of 55549177 is about 381.5568103787.

The spelling of 55549177 in words is "fifty-five million, five hundred forty-nine thousand, one hundred seventy-seven".