55151771 has 2 divisors, whose sum is σ = 55151772. Its totient is φ = 55151770.

The previous prime is 55151753. The next prime is 55151773. The reversal of 55151771 is 17715155.

It is a happy number.

55151771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55151771 is a prime.

Together with 55151773, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_3290756 and since 55151771 and 3290756 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (55151773) 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, 27575885 + 27575886.

It is an arithmetic number, because the mean of its divisors is an integer number (27575886).

Almost surely, 2^55151771 is an apocalyptic number.

55151771 is a deficient number, since it is larger than the sum of its proper divisors (1).

55151771 is an equidigital number, since it uses as much as digits as its factorization.

55151771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6125, while the sum is 32.

The square root of 55151771 is about 7426.4238365447. The cubic root of 55151771 is about 380.6447295962.

The spelling of 55151771 in words is "fifty-five million, one hundred fifty-one thousand, seven hundred seventy-one".