47422321 has 4 divisors (see below), whose sum is σ = 47724532. Its totient is φ = 47120112.
The previous prime is 47422313. The next prime is 47422327. The reversal of 47422321 is 12322474.
It is a happy number.
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 5948721 + 41473600 = 2439^2 + 6440^2 .
It is a cyclic number.
It is not a de Polignac number, because 47422321 - 23 = 47422313 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (47422327) 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, 150870 + ... + 151183.
It is an arithmetic number, because the mean of its divisors is an integer number (11931133).
Almost surely, 247422321 is an apocalyptic number.
It is an amenable number.
47422321 is a deficient number, since it is larger than the sum of its proper divisors (302211).
47422321 is a wasteful number, since it uses less digits than its factorization.
47422321 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 302210.
The product of its digits is 2688, while the sum is 25.
The square root of 47422321 is about 6886.3866432259. The cubic root of 47422321 is about 361.9602965114.
Adding to 47422321 its reverse (12322474), we get a palindrome (59744795).
The spelling of 47422321 in words is "forty-seven million, four hundred twenty-two thousand, three hundred twenty-one".
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