61382917 has 2 divisors, whose sum is σ = 61382918. Its totient is φ = 61382916.

The previous prime is 61382891. The next prime is 61382927. The reversal of 61382917 is 71928316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49999041 + 11383876 = 7071^2 + 3374^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61382917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61382927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30691458 + 30691459.

It is an arithmetic number, because the mean of its divisors is an integer number (30691459).

Almost surely, 2^61382917 is an apocalyptic number.

It is an amenable number.

61382917 is a deficient number, since it is larger than the sum of its proper divisors (1).

61382917 is an equidigital number, since it uses as much as digits as its factorization.

61382917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 37.

The square root of 61382917 is about 7834.7250749468. The cubic root of 61382917 is about 394.4716902220.

The spelling of 61382917 in words is "sixty-one million, three hundred eighty-two thousand, nine hundred seventeen".