61271317 has 2 divisors, whose sum is σ = 61271318. Its totient is φ = 61271316.

The previous prime is 61271293. The next prime is 61271321. The reversal of 61271317 is 71317216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41075281 + 20196036 = 6409^2 + 4494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61271317 is a prime.

It is a Chen prime.

It is equal to p_3633085 and since 61271317 and 3633085 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61271387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30635658 + 30635659.

It is an arithmetic number, because the mean of its divisors is an integer number (30635659).

Almost surely, 2^61271317 is an apocalyptic number.

It is an amenable number.

61271317 is a deficient number, since it is larger than the sum of its proper divisors (1).

61271317 is an equidigital number, since it uses as much as digits as its factorization.

61271317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1764, while the sum is 28.

The square root of 61271317 is about 7827.5996959477. The cubic root of 61271317 is about 394.2324828055.

The spelling of 61271317 in words is "sixty-one million, two hundred seventy-one thousand, three hundred seventeen".