61608133 has 2 divisors, whose sum is σ = 61608134. Its totient is φ = 61608132.

The previous prime is 61608091. The next prime is 61608143. The reversal of 61608133 is 33180616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61434244 + 173889 = 7838^2 + 417^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61608133 is a prime.

It is equal to p_3651760 and since 61608133 and 3651760 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61608143) 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, 30804066 + 30804067.

It is an arithmetic number, because the mean of its divisors is an integer number (30804067).

Almost surely, 2^61608133 is an apocalyptic number.

It is an amenable number.

61608133 is a deficient number, since it is larger than the sum of its proper divisors (1).

61608133 is an equidigital number, since it uses as much as digits as its factorization.

61608133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 61608133 is about 7849.0848511148. The cubic root of 61608133 is about 394.9535447156.

Adding to 61608133 its reverse (33180616), we get a palindrome (94788749).

The spelling of 61608133 in words is "sixty-one million, six hundred eight thousand, one hundred thirty-three".