61332239 has 2 divisors, whose sum is σ = 61332240. Its totient is φ = 61332238.

The previous prime is 61332223. The next prime is 61332241. The reversal of 61332239 is 93223316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61332239 - 2⁴ = 61332223 is a prime.

Together with 61332241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61332259) 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, 30666119 + 30666120.

It is an arithmetic number, because the mean of its divisors is an integer number (30666120).

Almost surely, 2^61332239 is an apocalyptic number.

61332239 is a deficient number, since it is larger than the sum of its proper divisors (1).

61332239 is an equidigital number, since it uses as much as digits as its factorization.

61332239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 29.

The square root of 61332239 is about 7831.4902157891. The cubic root of 61332239 is about 394.3631011586.

The spelling of 61332239 in words is "sixty-one million, three hundred thirty-two thousand, two hundred thirty-nine".