61545193 has 2 divisors, whose sum is σ = 61545194. Its totient is φ = 61545192.

The previous prime is 61545179. The next prime is 61545203. The reversal of 61545193 is 39154516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43930384 + 17614809 = 6628^2 + 4197^2 .

It is a cyclic number.

It is not a de Polignac number, because 61545193 - 2²¹ = 59448041 is a prime.

It is not a weakly prime, because it can be changed into another prime (61545793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30772596 + 30772597.

It is an arithmetic number, because the mean of its divisors is an integer number (30772597).

Almost surely, 2^61545193 is an apocalyptic number.

It is an amenable number.

61545193 is a deficient number, since it is larger than the sum of its proper divisors (1).

61545193 is an equidigital number, since it uses as much as digits as its factorization.

61545193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 34.

The square root of 61545193 is about 7845.0744419668. The cubic root of 61545193 is about 394.8190016233.

The spelling of 61545193 in words is "sixty-one million, five hundred forty-five thousand, one hundred ninety-three".