46866221 has 2 divisors, whose sum is σ = 46866222. Its totient is φ = 46866220.

The previous prime is 46866187. The next prime is 46866241. The reversal of 46866221 is 12266864.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46717225 + 148996 = 6835^2 + 386^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-46866221 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46866241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23433110 + 23433111.

It is an arithmetic number, because the mean of its divisors is an integer number (23433111).

Almost surely, 2^46866221 is an apocalyptic number.

It is an amenable number.

46866221 is a deficient number, since it is larger than the sum of its proper divisors (1).

46866221 is an equidigital number, since it uses as much as digits as its factorization.

46866221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 35.

The square root of 46866221 is about 6845.8908112823. The cubic root of 46866221 is about 360.5398818222.

The spelling of 46866221 in words is "forty-six million, eight hundred sixty-six thousand, two hundred twenty-one".