55077251 has 2 divisors, whose sum is σ = 55077252. Its totient is φ = 55077250.

The previous prime is 55077193. The next prime is 55077289. The reversal of 55077251 is 15277055.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55077251 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (55071251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27538625 + 27538626.

It is an arithmetic number, because the mean of its divisors is an integer number (27538626).

Almost surely, 2^55077251 is an apocalyptic number.

55077251 is a deficient number, since it is larger than the sum of its proper divisors (1).

55077251 is an equidigital number, since it uses as much as digits as its factorization.

55077251 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 55077251 is about 7421.4049209028. The cubic root of 55077251 is about 380.4732124050.

The spelling of 55077251 in words is "fifty-five million, seventy-seven thousand, two hundred fifty-one".