52555639 has 2 divisors, whose sum is σ = 52555640. Its totient is φ = 52555638.

The previous prime is 52555631. The next prime is 52555697. The reversal of 52555639 is 93655525.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52555639 - 2³ = 52555631 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 (52555631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26277819 + 26277820.

It is an arithmetic number, because the mean of its divisors is an integer number (26277820).

Almost surely, 2^52555639 is an apocalyptic number.

52555639 is a deficient number, since it is larger than the sum of its proper divisors (1).

52555639 is an equidigital number, since it uses as much as digits as its factorization.

52555639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 202500, while the sum is 40.

The square root of 52555639 is about 7249.5268121444. The cubic root of 52555639 is about 374.5758499202.

The spelling of 52555639 in words is "fifty-two million, five hundred fifty-five thousand, six hundred thirty-nine".