52420609 has 2 divisors, whose sum is σ = 52420610. Its totient is φ = 52420608.

The previous prime is 52420583. The next prime is 52420631. The reversal of 52420609 is 90602425.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39025009 + 13395600 = 6247^2 + 3660^2 .

It is a cyclic number.

It is not a de Polignac number, because 52420609 - 2¹³ = 52412417 is a prime.

It is not a weakly prime, because it can be changed into another prime (52420699) 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, 26210304 + 26210305.

It is an arithmetic number, because the mean of its divisors is an integer number (26210305).

It is a Proth number, since it is equal to 6399 ⋅ 2¹³ + 1 and 6399 < 2¹³.

Almost surely, 2^52420609 is an apocalyptic number.

It is an amenable number.

52420609 is a deficient number, since it is larger than the sum of its proper divisors (1).

52420609 is an equidigital number, since it uses as much as digits as its factorization.

52420609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 52420609 is about 7240.2078008853. The cubic root of 52420609 is about 374.2547784041.

The spelling of 52420609 in words is "fifty-two million, four hundred twenty thousand, six hundred nine".