55151081 has 2 divisors, whose sum is σ = 55151082. Its totient is φ = 55151080.

The previous prime is 55151039. The next prime is 55151099. The reversal of 55151081 is 18015155.

55151081 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 can be written as a sum of positive squares in only one way, i.e., 30151081 + 25000000 = 5491^2 + 5000^2 .

It is a cyclic number.

It is not a de Polignac number, because 55151081 - 2¹⁴ = 55134697 is a prime.

It is a super-2 number, since 2×55151081² = 6083283470937122, which contains 22 as substring.

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 55151081.

It is not a weakly prime, because it can be changed into another prime (55151021) 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, 27575540 + 27575541.

It is an arithmetic number, because the mean of its divisors is an integer number (27575541).

Almost surely, 2^55151081 is an apocalyptic number.

It is an amenable number.

55151081 is a deficient number, since it is larger than the sum of its proper divisors (1).

55151081 is an equidigital number, since it uses as much as digits as its factorization.

55151081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1000, while the sum is 26.

The square root of 55151081 is about 7426.3773806614. The cubic root of 55151081 is about 380.6431421829.

The spelling of 55151081 in words is "fifty-five million, one hundred fifty-one thousand, eighty-one".