61002289 has 2 divisors, whose sum is σ = 61002290. Its totient is φ = 61002288.

The previous prime is 61002281. The next prime is 61002313. The reversal of 61002289 is 98220016.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45792289 + 15210000 = 6767^2 + 3900^2 .

It is a cyclic number.

It is not a de Polignac number, because 61002289 - 2³ = 61002281 is a prime.

It is equal to p_3618163 and since 61002289 and 3618163 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (61002281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30501144 + 30501145.

It is an arithmetic number, because the mean of its divisors is an integer number (30501145).

Almost surely, 2^61002289 is an apocalyptic number.

It is an amenable number.

61002289 is a deficient number, since it is larger than the sum of its proper divisors (1).

61002289 is an equidigital number, since it uses as much as digits as its factorization.

61002289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 61002289 is about 7810.3962127411. The cubic root of 61002289 is about 393.6546420967.

The spelling of 61002289 in words is "sixty-one million, two thousand, two hundred eighty-nine".