55211873 has 2 divisors, whose sum is σ = 55211874. Its totient is φ = 55211872.

The previous prime is 55211867. The next prime is 55211909. The reversal of 55211873 is 37811255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47100769 + 8111104 = 6863^2 + 2848^2 .

It is a cyclic number.

It is not a de Polignac number, because 55211873 - 2⁴ = 55211857 is a prime.

It is not a weakly prime, because it can be changed into another prime (55211813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27605936 + 27605937.

It is an arithmetic number, because the mean of its divisors is an integer number (27605937).

Almost surely, 2^55211873 is an apocalyptic number.

It is an amenable number.

55211873 is a deficient number, since it is larger than the sum of its proper divisors (1).

55211873 is an equidigital number, since it uses as much as digits as its factorization.

55211873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8400, while the sum is 32.

The square root of 55211873 is about 7430.4692314820. The cubic root of 55211873 is about 380.7829494203.

The spelling of 55211873 in words is "fifty-five million, two hundred eleven thousand, eight hundred seventy-three".