46572221 has 2 divisors, whose sum is σ = 46572222. Its totient is φ = 46572220.

The previous prime is 46572167. The next prime is 46572223. The reversal of 46572221 is 12227564.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46308025 + 264196 = 6805^2 + 514^2 .

It is a cyclic number.

It is not a de Polignac number, because 46572221 - 2²² = 42377917 is a prime.

Together with 46572223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46572223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23286110 + 23286111.

It is an arithmetic number, because the mean of its divisors is an integer number (23286111).

Almost surely, 2^46572221 is an apocalyptic number.

It is an amenable number.

46572221 is a deficient number, since it is larger than the sum of its proper divisors (1).

46572221 is an equidigital number, since it uses as much as digits as its factorization.

46572221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 29.

The square root of 46572221 is about 6824.3842945719. The cubic root of 46572221 is about 359.7843899262.

Adding to 46572221 its reverse (12227564), we get a palindrome (58799785).

The spelling of 46572221 in words is "forty-six million, five hundred seventy-two thousand, two hundred twenty-one".