55457071 has 4 divisors (see below), whose sum is σ = 57868272. Its totient is φ = 53045872.

The previous prime is 55457069. The next prime is 55457089. The reversal of 55457071 is 17075455.

It is a happy number.

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 55457071 - 2¹ = 55457069 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 (55457011) 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, 1205566 + ... + 1205611.

It is an arithmetic number, because the mean of its divisors is an integer number (14467068).

Almost surely, 2^55457071 is an apocalyptic number.

55457071 is a deficient number, since it is larger than the sum of its proper divisors (2411201).

55457071 is a wasteful number, since it uses less digits than its factorization.

55457071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411200.

The product of its (nonzero) digits is 24500, while the sum is 34.

The square root of 55457071 is about 7446.9504496807. The cubic root of 55457071 is about 381.3458074724.

The spelling of 55457071 in words is "fifty-five million, four hundred fifty-seven thousand, seventy-one".