47223161 has 4 divisors (see below), whose sum is σ = 50001012. Its totient is φ = 44445312.

The previous prime is 47223139. The next prime is 47223167. The reversal of 47223161 is 16132274.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37884025 + 9339136 = 6155^2 + 3056^2 .

It is a cyclic number.

It is not a de Polignac number, because 47223161 - 2⁶ = 47223097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47223161.

It is not an unprimeable number, because it can be changed into a prime (47223167) 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, 1388900 + ... + 1388933.

It is an arithmetic number, because the mean of its divisors is an integer number (12500253).

Almost surely, 2^47223161 is an apocalyptic number.

It is an amenable number.

47223161 is a deficient number, since it is larger than the sum of its proper divisors (2777851).

47223161 is a wasteful number, since it uses less digits than its factorization.

47223161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777850.

The product of its digits is 2016, while the sum is 26.

The square root of 47223161 is about 6871.9110151398. The cubic root of 47223161 is about 361.4528760710.

The spelling of 47223161 in words is "forty-seven million, two hundred twenty-three thousand, one hundred sixty-one".