55434871 has 2 divisors, whose sum is σ = 55434872. Its totient is φ = 55434870.

The previous prime is 55434823. The next prime is 55434937. The reversal of 55434871 is 17843455.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55434871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55434871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55434971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27717435 + 27717436.

It is an arithmetic number, because the mean of its divisors is an integer number (27717436).

Almost surely, 2^55434871 is an apocalyptic number.

55434871 is a deficient number, since it is larger than the sum of its proper divisors (1).

55434871 is an equidigital number, since it uses as much as digits as its factorization.

55434871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 37.

The square root of 55434871 is about 7445.4597574629. The cubic root of 55434871 is about 381.2949152136.

The spelling of 55434871 in words is "fifty-five million, four hundred thirty-four thousand, eight hundred seventy-one".