61971353 has 2 divisors, whose sum is σ = 61971354. Its totient is φ = 61971352.

The previous prime is 61971317. The next prime is 61971359. The reversal of 61971353 is 35317916.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40921609 + 21049744 = 6397^2 + 4588^2 .

It is a cyclic number.

It is not a de Polignac number, because 61971353 - 2⁸ = 61971097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61971359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30985676 + 30985677.

It is an arithmetic number, because the mean of its divisors is an integer number (30985677).

Almost surely, 2^61971353 is an apocalyptic number.

It is an amenable number.

61971353 is a deficient number, since it is larger than the sum of its proper divisors (1).

61971353 is an equidigital number, since it uses as much as digits as its factorization.

61971353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 35.

The square root of 61971353 is about 7872.1885775177. The cubic root of 61971353 is about 395.7281936626.

The spelling of 61971353 in words is "sixty-one million, nine hundred seventy-one thousand, three hundred fifty-three".