46782221 has 4 divisors (see below), whose sum is σ = 47575200. Its totient is φ = 45989244.

The previous prime is 46782209. The next prime is 46782233. The reversal of 46782221 is 12228764.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (46782209) and next prime (46782233).

It is a cyclic number.

It is not a de Polignac number, because 46782221 - 2⁶ = 46782157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46782721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396401 + ... + 396518.

It is an arithmetic number, because the mean of its divisors is an integer number (11893800).

Almost surely, 2^46782221 is an apocalyptic number.

It is an amenable number.

46782221 is a deficient number, since it is larger than the sum of its proper divisors (792979).

46782221 is an equidigital number, since it uses as much as digits as its factorization.

46782221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792978.

The product of its digits is 10752, while the sum is 32.

The square root of 46782221 is about 6839.7529926160. The cubic root of 46782221 is about 360.3243501713.

The spelling of 46782221 in words is "forty-six million, seven hundred eighty-two thousand, two hundred twenty-one".