55242871 has 2 divisors, whose sum is σ = 55242872. Its totient is φ = 55242870.

The previous prime is 55242857. The next prime is 55242919. The reversal of 55242871 is 17824255.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55242871 - 2⁹ = 55242359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55242851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27621435 + 27621436.

It is an arithmetic number, because the mean of its divisors is an integer number (27621436).

Almost surely, 2^55242871 is an apocalyptic number.

55242871 is a deficient number, since it is larger than the sum of its proper divisors (1).

55242871 is an equidigital number, since it uses as much as digits as its factorization.

55242871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22400, while the sum is 34.

The square root of 55242871 is about 7432.5548097542. The cubic root of 55242871 is about 380.8541979938.

The spelling of 55242871 in words is "fifty-five million, two hundred forty-two thousand, eight hundred seventy-one".