61145849 has 2 divisors, whose sum is σ = 61145850. Its totient is φ = 61145848.

The previous prime is 61145831. The next prime is 61145869. The reversal of 61145849 is 94854116.

61145849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51380224 + 9765625 = 7168^2 + 3125^2 .

It is a cyclic number.

It is not a de Polignac number, because 61145849 - 2⁸ = 61145593 is a prime.

It is not a weakly prime, because it can be changed into another prime (61145869) 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, 30572924 + 30572925.

It is an arithmetic number, because the mean of its divisors is an integer number (30572925).

Almost surely, 2^61145849 is an apocalyptic number.

It is an amenable number.

61145849 is a deficient number, since it is larger than the sum of its proper divisors (1).

61145849 is an equidigital number, since it uses as much as digits as its factorization.

61145849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 38.

The square root of 61145849 is about 7819.5811268891. The cubic root of 61145849 is about 393.9632031221.

The spelling of 61145849 in words is "sixty-one million, one hundred forty-five thousand, eight hundred forty-nine".