52731409 has 2 divisors, whose sum is σ = 52731410. Its totient is φ = 52731408.

The previous prime is 52731397. The next prime is 52731421. The reversal of 52731409 is 90413725.

It is a balanced prime because it is at equal distance from previous prime (52731397) and next prime (52731421).

It can be written as a sum of positive squares in only one way, i.e., 27531009 + 25200400 = 5247^2 + 5020^2 .

It is a cyclic number.

It is not a de Polignac number, because 52731409 - 2⁵ = 52731377 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (52731439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26365704 + 26365705.

It is an arithmetic number, because the mean of its divisors is an integer number (26365705).

Almost surely, 2^52731409 is an apocalyptic number.

It is an amenable number.

52731409 is a deficient number, since it is larger than the sum of its proper divisors (1).

52731409 is an equidigital number, since it uses as much as digits as its factorization.

52731409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 52731409 is about 7261.6395531588. The cubic root of 52731409 is about 374.9929693497.

The spelling of 52731409 in words is "fifty-two million, seven hundred thirty-one thousand, four hundred nine".