61541849 has 2 divisors, whose sum is σ = 61541850. Its totient is φ = 61541848.

The previous prime is 61541839. The next prime is 61541873. The reversal of 61541849 is 94814516.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58675600 + 2866249 = 7660^2 + 1693^2 .

It is a cyclic number.

It is not a de Polignac number, because 61541849 - 2¹² = 61537753 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (61541839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30770924 + 30770925.

It is an arithmetic number, because the mean of its divisors is an integer number (30770925).

Almost surely, 2^61541849 is an apocalyptic number.

It is an amenable number.

61541849 is a deficient number, since it is larger than the sum of its proper divisors (1).

61541849 is an equidigital number, since it uses as much as digits as its factorization.

61541849 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 61541849 is about 7844.8613117123. The cubic root of 61541849 is about 394.8118507878.

The spelling of 61541849 in words is "sixty-one million, five hundred forty-one thousand, eight hundred forty-nine".