52821047 has 2 divisors, whose sum is σ = 52821048. Its totient is φ = 52821046.

The previous prime is 52821037. The next prime is 52821053. The reversal of 52821047 is 74012825.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52821047 - 2⁸ = 52820791 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52821017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26410523 + 26410524.

It is an arithmetic number, because the mean of its divisors is an integer number (26410524).

Almost surely, 2^52821047 is an apocalyptic number.

52821047 is a deficient number, since it is larger than the sum of its proper divisors (1).

52821047 is an equidigital number, since it uses as much as digits as its factorization.

52821047 is an evil number, because the sum of its binary digits is even.

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

The square root of 52821047 is about 7267.8089545612. The cubic root of 52821047 is about 375.2053322900.

The spelling of 52821047 in words is "fifty-two million, eight hundred twenty-one thousand, forty-seven".