61045849 has 2 divisors, whose sum is σ = 61045850. Its totient is φ = 61045848.

The previous prime is 61045847. The next prime is 61045889. The reversal of 61045849 is 94854016.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35188624 + 25857225 = 5932^2 + 5085^2 .

It is a cyclic number.

It is not a de Polignac number, because 61045849 - 2¹ = 61045847 is a prime.

Together with 61045847, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (61045847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30522924 + 30522925.

It is an arithmetic number, because the mean of its divisors is an integer number (30522925).

Almost surely, 2^61045849 is an apocalyptic number.

It is an amenable number.

61045849 is a deficient number, since it is larger than the sum of its proper divisors (1).

61045849 is an equidigital number, since it uses as much as digits as its factorization.

61045849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 61045849 is about 7813.1843060304. The cubic root of 61045849 is about 393.7483189985.

The spelling of 61045849 in words is "sixty-one million, forty-five thousand, eight hundred forty-nine".