61070173 has 2 divisors, whose sum is σ = 61070174. Its totient is φ = 61070172.

The previous prime is 61070147. The next prime is 61070179. The reversal of 61070173 is 37107016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57486724 + 3583449 = 7582^2 + 1893^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61070173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61070179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30535086 + 30535087.

It is an arithmetic number, because the mean of its divisors is an integer number (30535087).

Almost surely, 2^61070173 is an apocalyptic number.

It is an amenable number.

61070173 is a deficient number, since it is larger than the sum of its proper divisors (1).

61070173 is an equidigital number, since it uses as much as digits as its factorization.

61070173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882, while the sum is 25.

The square root of 61070173 is about 7814.7407506583. The cubic root of 61070173 is about 393.8006089984.

Adding to 61070173 its reverse (37107016), we get a palindrome (98177189).

The spelling of 61070173 in words is "sixty-one million, seventy thousand, one hundred seventy-three".