61172417 has 2 divisors, whose sum is σ = 61172418. Its totient is φ = 61172416.

The previous prime is 61172399. The next prime is 61172453. The reversal of 61172417 is 71427116.

61172417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53129521 + 8042896 = 7289^2 + 2836^2 .

It is a cyclic number.

It is not a de Polignac number, because 61172417 - 2⁸ = 61172161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61172417.

It is not a weakly prime, because it can be changed into another prime (61172497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30586208 + 30586209.

It is an arithmetic number, because the mean of its divisors is an integer number (30586209).

Almost surely, 2^61172417 is an apocalyptic number.

It is an amenable number.

61172417 is a deficient number, since it is larger than the sum of its proper divisors (1).

61172417 is an equidigital number, since it uses as much as digits as its factorization.

61172417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2352, while the sum is 29.

The square root of 61172417 is about 7821.2797546182. The cubic root of 61172417 is about 394.0202541401.

The spelling of 61172417 in words is "sixty-one million, one hundred seventy-two thousand, four hundred seventeen".