55021271 has 8 divisors (see below), whose sum is σ = 55977600. Its totient is φ = 54069048.

The previous prime is 55021259. The next prime is 55021273. The reversal of 55021271 is 17212055.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55021271 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 (55021273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38630 + ... + 40028.

It is an arithmetic number, because the mean of its divisors is an integer number (6997200).

Almost surely, 2^55021271 is an apocalyptic number.

55021271 is a deficient number, since it is larger than the sum of its proper divisors (956329).

55021271 is a wasteful number, since it uses less digits than its factorization.

55021271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 55021271 is about 7417.6324389929. The cubic root of 55021271 is about 380.3442655766.

The spelling of 55021271 in words is "fifty-five million, twenty-one thousand, two hundred seventy-one".