49781161 has 2 divisors, whose sum is σ = 49781162. Its totient is φ = 49781160.

The previous prime is 49781113. The next prime is 49781167. The reversal of 49781161 is 16118794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48038761 + 1742400 = 6931^2 + 1320^2 .

It is a cyclic number.

It is not a de Polignac number, because 49781161 - 2⁹ = 49780649 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49781161.

It is not a weakly prime, because it can be changed into another prime (49781167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24890580 + 24890581.

It is an arithmetic number, because the mean of its divisors is an integer number (24890581).

Almost surely, 2^49781161 is an apocalyptic number.

It is an amenable number.

49781161 is a deficient number, since it is larger than the sum of its proper divisors (1).

49781161 is an equidigital number, since it uses as much as digits as its factorization.

49781161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 37.

The square root of 49781161 is about 7055.5765887700. The cubic root of 49781161 is about 367.8648906384.

The spelling of 49781161 in words is "forty-nine million, seven hundred eighty-one thousand, one hundred sixty-one".