40653161 has 2 divisors, whose sum is σ = 40653162. Its totient is φ = 40653160.

The previous prime is 40653149. The next prime is 40653187. The reversal of 40653161 is 16135604.

It is an a-pointer prime, because the next prime (40653187) can be obtained adding 40653161 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25200400 + 15452761 = 5020^2 + 3931^2 .

It is a cyclic number.

It is not a de Polignac number, because 40653161 - 2¹⁰ = 40652137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40653161.

It is not a weakly prime, because it can be changed into another prime (40653101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20326580 + 20326581.

It is an arithmetic number, because the mean of its divisors is an integer number (20326581).

Almost surely, 2^40653161 is an apocalyptic number.

It is an amenable number.

40653161 is a deficient number, since it is larger than the sum of its proper divisors (1).

40653161 is an equidigital number, since it uses as much as digits as its factorization.

40653161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 40653161 is about 6375.9831398773. The cubic root of 40653161 is about 343.8466308613.

Adding to 40653161 its reverse (16135604), we get a palindrome (56788765).

The spelling of 40653161 in words is "forty million, six hundred fifty-three thousand, one hundred sixty-one".