55921183 has 2 divisors, whose sum is σ = 55921184. Its totient is φ = 55921182.

The previous prime is 55921169. The next prime is 55921231. The reversal of 55921183 is 38112955.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55921183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55921133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27960591 + 27960592.

It is an arithmetic number, because the mean of its divisors is an integer number (27960592).

Almost surely, 2^55921183 is an apocalyptic number.

55921183 is a deficient number, since it is larger than the sum of its proper divisors (1).

55921183 is an equidigital number, since it uses as much as digits as its factorization.

55921183 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 34.

The square root of 55921183 is about 7478.0467369494. The cubic root of 55921183 is about 382.4066624037.

The spelling of 55921183 in words is "fifty-five million, nine hundred twenty-one thousand, one hundred eighty-three".