61170517 has 2 divisors, whose sum is σ = 61170518. Its totient is φ = 61170516.

The previous prime is 61170503. The next prime is 61170523. The reversal of 61170517 is 71507116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32878756 + 28291761 = 5734^2 + 5319^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61170517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61170017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30585258 + 30585259.

It is an arithmetic number, because the mean of its divisors is an integer number (30585259).

Almost surely, 2^61170517 is an apocalyptic number.

It is an amenable number.

61170517 is a deficient number, since it is larger than the sum of its proper divisors (1).

61170517 is an equidigital number, since it uses as much as digits as its factorization.

61170517 is an evil number, because the sum of its binary digits is even.

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

The square root of 61170517 is about 7821.1582901767. The cubic root of 61170517 is about 394.0161747077.

The spelling of 61170517 in words is "sixty-one million, one hundred seventy thousand, five hundred seventeen".