46722221 has 8 divisors (see below), whose sum is σ = 57504384. Its totient is φ = 36966960.

The previous prime is 46722217. The next prime is 46722227. The reversal of 46722221 is 12222764.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 46722221 - 2² = 46722217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46722227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256625 + ... + 256806.

It is an arithmetic number, because the mean of its divisors is an integer number (7188048).

Almost surely, 2^46722221 is an apocalyptic number.

It is an amenable number.

46722221 is a deficient number, since it is larger than the sum of its proper divisors (10782163).

46722221 is a wasteful number, since it uses less digits than its factorization.

46722221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513451.

The product of its digits is 2688, while the sum is 26.

The square root of 46722221 is about 6835.3654620657. The cubic root of 46722221 is about 360.1702409838.

Adding to 46722221 its reverse (12222764), we get a palindrome (58944985).

The spelling of 46722221 in words is "forty-six million, seven hundred twenty-two thousand, two hundred twenty-one".