55550071 has 4 divisors (see below), whose sum is σ = 55761552. Its totient is φ = 55338592.

The previous prime is 55550059. The next prime is 55550081. The reversal of 55550071 is 17005555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55550071 - 2⁷ = 55549943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55550021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105346 + ... + 105871.

It is an arithmetic number, because the mean of its divisors is an integer number (13940388).

Almost surely, 2^55550071 is an apocalyptic number.

55550071 is a deficient number, since it is larger than the sum of its proper divisors (211481).

55550071 is a wasteful number, since it uses less digits than its factorization.

55550071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211480.

The product of its (nonzero) digits is 4375, while the sum is 28.

The square root of 55550071 is about 7453.1920007471. The cubic root of 55550071 is about 381.5588572735.

The spelling of 55550071 in words is "fifty-five million, five hundred fifty thousand, seventy-one".