61517017 has 2 divisors, whose sum is σ = 61517018. Its totient is φ = 61517016.

The previous prime is 61516969. The next prime is 61517039. The reversal of 61517017 is 71071516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45549001 + 15968016 = 6749^2 + 3996^2 .

It is a cyclic number.

It is not a de Polignac number, because 61517017 - 2¹⁵ = 61484249 is a prime.

It is not a weakly prime, because it can be changed into another prime (61517317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30758508 + 30758509.

It is an arithmetic number, because the mean of its divisors is an integer number (30758509).

Almost surely, 2^61517017 is an apocalyptic number.

It is an amenable number.

61517017 is a deficient number, since it is larger than the sum of its proper divisors (1).

61517017 is an equidigital number, since it uses as much as digits as its factorization.

61517017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1470, while the sum is 28.

The square root of 61517017 is about 7843.2784599299. The cubic root of 61517017 is about 394.7587417411.

The spelling of 61517017 in words is "sixty-one million, five hundred seventeen thousand, seventeen".