55283971 has 4 divisors (see below), whose sum is σ = 55593000. Its totient is φ = 54974944.

The previous prime is 55283959. The next prime is 55283981. The reversal of 55283971 is 17938255.

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 55283971 - 2⁷ = 55283843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55283981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154246 + ... + 154603.

It is an arithmetic number, because the mean of its divisors is an integer number (13898250).

Almost surely, 2^55283971 is an apocalyptic number.

55283971 is a deficient number, since it is larger than the sum of its proper divisors (309029).

55283971 is a wasteful number, since it uses less digits than its factorization.

55283971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309028.

The product of its digits is 75600, while the sum is 40.

The square root of 55283971 is about 7435.3191592560. The cubic root of 55283971 is about 380.9486248218.

The spelling of 55283971 in words is "fifty-five million, two hundred eighty-three thousand, nine hundred seventy-one".