55000000291 has 2 divisors, whose sum is σ = 55000000292. Its totient is φ = 55000000290.

The previous prime is 55000000277. The next prime is 55000000313. The reversal of 55000000291 is 19200000055.

It is an a-pointer prime, because the next prime (55000000313) can be obtained adding 55000000291 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55000000291 - 2⁷ = 55000000163 is a prime.

It is not a weakly prime, because it can be changed into another prime (55000000201) 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, 27500000145 + 27500000146.

It is an arithmetic number, because the mean of its divisors is an integer number (27500000146).

Almost surely, 2^55000000291 is an apocalyptic number.

55000000291 is a deficient number, since it is larger than the sum of its proper divisors (1).

55000000291 is an equidigital number, since it uses as much as digits as its factorization.

55000000291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 22.

The spelling of 55000000291 in words is "fifty-five billion, two hundred ninety-one", and thus it is an aban number.