61029289 has 2 divisors, whose sum is σ = 61029290. Its totient is φ = 61029288.

The previous prime is 61029271. The next prime is 61029301. The reversal of 61029289 is 98292016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34609689 + 26419600 = 5883^2 + 5140^2 .

It is a cyclic number.

It is not a de Polignac number, because 61029289 - 2⁹ = 61028777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61029229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30514644 + 30514645.

It is an arithmetic number, because the mean of its divisors is an integer number (30514645).

Almost surely, 2^61029289 is an apocalyptic number.

It is an amenable number.

61029289 is a deficient number, since it is larger than the sum of its proper divisors (1).

61029289 is an equidigital number, since it uses as much as digits as its factorization.

61029289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 61029289 is about 7812.1244869754. The cubic root of 61029289 is about 393.7127115440.

The spelling of 61029289 in words is "sixty-one million, twenty-nine thousand, two hundred eighty-nine".