46331221 has 2 divisors, whose sum is σ = 46331222. Its totient is φ = 46331220.

The previous prime is 46331161. The next prime is 46331231. The reversal of 46331221 is 12213364.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39828721 + 6502500 = 6311^2 + 2550^2 .

It is a cyclic number.

It is not a de Polignac number, because 46331221 - 2¹⁷ = 46200149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 46331192 and 46331201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46331231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23165610 + 23165611.

It is an arithmetic number, because the mean of its divisors is an integer number (23165611).

Almost surely, 2^46331221 is an apocalyptic number.

It is an amenable number.

46331221 is a deficient number, since it is larger than the sum of its proper divisors (1).

46331221 is an equidigital number, since it uses as much as digits as its factorization.

46331221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 22.

The square root of 46331221 is about 6806.7041216730. The cubic root of 46331221 is about 359.1627172355.

Adding to 46331221 its reverse (12213364), we get a palindrome (58544585).

It can be divided in two parts, 463 and 31221, that added together give a square (31684 = 178²).

The spelling of 46331221 in words is "forty-six million, three hundred thirty-one thousand, two hundred twenty-one".