55804211 has 2 divisors, whose sum is σ = 55804212. Its totient is φ = 55804210.

The previous prime is 55804171. The next prime is 55804223. The reversal of 55804211 is 11240855.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55804211 is a prime.

It is a super-2 number, since 2×55804211² = 6228219930665042, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55804241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27902105 + 27902106.

It is an arithmetic number, because the mean of its divisors is an integer number (27902106).

Almost surely, 2^55804211 is an apocalyptic number.

55804211 is a deficient number, since it is larger than the sum of its proper divisors (1).

55804211 is an equidigital number, since it uses as much as digits as its factorization.

55804211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 55804211 is about 7470.2216165252. The cubic root of 55804211 is about 382.1398458218.

The spelling of 55804211 in words is "fifty-five million, eight hundred four thousand, two hundred eleven".