61488169 has 2 divisors, whose sum is σ = 61488170. Its totient is φ = 61488168.

The previous prime is 61488157. The next prime is 61488181. The reversal of 61488169 is 96188416.

61488169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (61488157) and next prime (61488181).

It can be written as a sum of positive squares in only one way, i.e., 39538944 + 21949225 = 6288^2 + 4685^2 .

It is a cyclic number.

It is not a de Polignac number, because 61488169 - 2⁷ = 61488041 is a prime.

It is a super-2 number, since 2×61488169² = 7561589853945122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61480169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30744084 + 30744085.

It is an arithmetic number, because the mean of its divisors is an integer number (30744085).

Almost surely, 2^61488169 is an apocalyptic number.

It is an amenable number.

61488169 is a deficient number, since it is larger than the sum of its proper divisors (1).

61488169 is an equidigital number, since it uses as much as digits as its factorization.

61488169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 43.

The square root of 61488169 is about 7841.4392173886. The cubic root of 61488169 is about 394.6970255889.

The spelling of 61488169 in words is "sixty-one million, four hundred eighty-eight thousand, one hundred sixty-nine".