55015277 has 2 divisors, whose sum is σ = 55015278. Its totient is φ = 55015276.

The previous prime is 55015253. The next prime is 55015309. The reversal of 55015277 is 77251055.

It is an a-pointer prime, because the next prime (55015309) can be obtained adding 55015277 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49970761 + 5044516 = 7069^2 + 2246^2 .

It is a cyclic number.

It is not a de Polignac number, because 55015277 - 2⁸ = 55015021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55015217) 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, 27507638 + 27507639.

It is an arithmetic number, because the mean of its divisors is an integer number (27507639).

Almost surely, 2^55015277 is an apocalyptic number.

It is an amenable number.

55015277 is a deficient number, since it is larger than the sum of its proper divisors (1).

55015277 is an equidigital number, since it uses as much as digits as its factorization.

55015277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12250, while the sum is 32.

The square root of 55015277 is about 7417.2283907131. The cubic root of 55015277 is about 380.3304535467.

The spelling of 55015277 in words is "fifty-five million, fifteen thousand, two hundred seventy-seven".