61285417 has 2 divisors, whose sum is σ = 61285418. Its totient is φ = 61285416.

The previous prime is 61285379. The next prime is 61285451. The reversal of 61285417 is 71458216.

It is an a-pointer prime, because the next prime (61285451) can be obtained adding 61285417 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40755456 + 20529961 = 6384^2 + 4531^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61285417 is a prime.

It is not a weakly prime, because it can be changed into another prime (61285117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30642708 + 30642709.

It is an arithmetic number, because the mean of its divisors is an integer number (30642709).

Almost surely, 2^61285417 is an apocalyptic number.

It is an amenable number.

61285417 is a deficient number, since it is larger than the sum of its proper divisors (1).

61285417 is an equidigital number, since it uses as much as digits as its factorization.

61285417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 34.

The square root of 61285417 is about 7828.5003033787. The cubic root of 61285417 is about 394.2627212702.

The spelling of 61285417 in words is "sixty-one million, two hundred eighty-five thousand, four hundred seventeen".