61371239 has 2 divisors, whose sum is σ = 61371240. Its totient is φ = 61371238.

The previous prime is 61371223. The next prime is 61371283. The reversal of 61371239 is 93217316.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61371239 - 2⁴ = 61371223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61371209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30685619 + 30685620.

It is an arithmetic number, because the mean of its divisors is an integer number (30685620).

Almost surely, 2^61371239 is an apocalyptic number.

61371239 is a deficient number, since it is larger than the sum of its proper divisors (1).

61371239 is an equidigital number, since it uses as much as digits as its factorization.

61371239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 32.

The square root of 61371239 is about 7833.9797676532. The cubic root of 61371239 is about 394.4466727699.

The spelling of 61371239 in words is "sixty-one million, three hundred seventy-one thousand, two hundred thirty-nine".