61204859 has 2 divisors, whose sum is σ = 61204860. Its totient is φ = 61204858.

The previous prime is 61204853. The next prime is 61204861. The reversal of 61204859 is 95840216.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61204859 is a prime.

Together with 61204861, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61204853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30602429 + 30602430.

It is an arithmetic number, because the mean of its divisors is an integer number (30602430).

Almost surely, 2^61204859 is an apocalyptic number.

61204859 is a deficient number, since it is larger than the sum of its proper divisors (1).

61204859 is an equidigital number, since it uses as much as digits as its factorization.

61204859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 61204859 is about 7823.3534369860. The cubic root of 61204859 is about 394.0898963452.

The spelling of 61204859 in words is "sixty-one million, two hundred four thousand, eight hundred fifty-nine".