47052821 has 8 divisors (see below), whose sum is σ = 50082264. Its totient is φ = 44052480.

The previous prime is 47052809. The next prime is 47052829. The reversal of 47052821 is 12825074.

It can be written as a sum of positive squares in 4 ways, for example, as 280900 + 46771921 = 530^2 + 6839^2 .

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 47052821 - 2¹⁸ = 46790677 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 (47052829) 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, 3890 + ... + 10451.

It is an arithmetic number, because the mean of its divisors is an integer number (6260283).

Almost surely, 2^47052821 is an apocalyptic number.

It is an amenable number.

47052821 is a deficient number, since it is larger than the sum of its proper divisors (3029443).

47052821 is a wasteful number, since it uses less digits than its factorization.

47052821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14551.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 47052821 is about 6859.5058859950. The cubic root of 47052821 is about 361.0177501676.

Adding to 47052821 its reverse (12825074), we get a palindrome (59877895).

The spelling of 47052821 in words is "forty-seven million, fifty-two thousand, eight hundred twenty-one".