61159817 has 2 divisors, whose sum is σ = 61159818. Its totient is φ = 61159816.

The previous prime is 61159789. The next prime is 61159859. The reversal of 61159817 is 71895116.

61159817 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., 59969536 + 1190281 = 7744^2 + 1091^2 .

It is a cyclic number.

It is not a de Polignac number, because 61159817 - 2⁸ = 61159561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61159867) 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, 30579908 + 30579909.

It is an arithmetic number, because the mean of its divisors is an integer number (30579909).

Almost surely, 2^61159817 is an apocalyptic number.

It is an amenable number.

61159817 is a deficient number, since it is larger than the sum of its proper divisors (1).

61159817 is an equidigital number, since it uses as much as digits as its factorization.

61159817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 38.

The square root of 61159817 is about 7820.4742183579. The cubic root of 61159817 is about 393.9931994841.

The spelling of 61159817 in words is "sixty-one million, one hundred fifty-nine thousand, eight hundred seventeen".