61885459 has 2 divisors, whose sum is σ = 61885460. Its totient is φ = 61885458.

The previous prime is 61885379. The next prime is 61885487. The reversal of 61885459 is 95458816.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61885459 - 2¹³ = 61877267 is a prime.

It is not a weakly prime, because it can be changed into another prime (61888459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30942729 + 30942730.

It is an arithmetic number, because the mean of its divisors is an integer number (30942730).

Almost surely, 2^61885459 is an apocalyptic number.

61885459 is a deficient number, since it is larger than the sum of its proper divisors (1).

61885459 is an equidigital number, since it uses as much as digits as its factorization.

61885459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 46.

The square root of 61885459 is about 7866.7311508657. The cubic root of 61885459 is about 395.5452790743.

The spelling of 61885459 in words is "sixty-one million, eight hundred eighty-five thousand, four hundred fifty-nine".