49718161 has 2 divisors, whose sum is σ = 49718162. Its totient is φ = 49718160.

The previous prime is 49718153. The next prime is 49718167. The reversal of 49718161 is 16181794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35700625 + 14017536 = 5975^2 + 3744^2 .

It is a cyclic number.

It is not a de Polignac number, because 49718161 - 2³ = 49718153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49718161.

It is not a weakly prime, because it can be changed into another prime (49718167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24859080 + 24859081.

It is an arithmetic number, because the mean of its divisors is an integer number (24859081).

Almost surely, 2^49718161 is an apocalyptic number.

It is an amenable number.

49718161 is a deficient number, since it is larger than the sum of its proper divisors (1).

49718161 is an equidigital number, since it uses as much as digits as its factorization.

49718161 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 49718161 is about 7051.1106217390. The cubic root of 49718161 is about 367.7096426757.

The spelling of 49718161 in words is "forty-nine million, seven hundred eighteen thousand, one hundred sixty-one".