47221766 has 4 divisors (see below), whose sum is σ = 70832652. Its totient is φ = 23610882.

The previous prime is 47221739. The next prime is 47221789. The reversal of 47221766 is 66712274.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11805440 + ... + 11805443.

It is an arithmetic number, because the mean of its divisors is an integer number (17708163).

Almost surely, 2^47221766 is an apocalyptic number.

47221766 is a deficient number, since it is larger than the sum of its proper divisors (23610886).

47221766 is a wasteful number, since it uses less digits than its factorization.

47221766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23610885.

The product of its digits is 28224, while the sum is 35.

The square root of 47221766 is about 6871.8095142400. The cubic root of 47221766 is about 361.4493168590.

The spelling of 47221766 in words is "forty-seven million, two hundred twenty-one thousand, seven hundred sixty-six".