40651361 has 2 divisors, whose sum is σ = 40651362. Its totient is φ = 40651360.

The previous prime is 40651357. The next prime is 40651409. The reversal of 40651361 is 16315604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29495761 + 11155600 = 5431^2 + 3340^2 .

It is a cyclic number.

It is not a de Polignac number, because 40651361 - 2² = 40651357 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 40651361.

It is not a weakly prime, because it can be changed into another prime (40651561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20325680 + 20325681.

It is an arithmetic number, because the mean of its divisors is an integer number (20325681).

Almost surely, 2^40651361 is an apocalyptic number.

It is an amenable number.

40651361 is a deficient number, since it is larger than the sum of its proper divisors (1).

40651361 is an equidigital number, since it uses as much as digits as its factorization.

40651361 is an odious number, because the sum of its binary digits is odd.

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

The square root of 40651361 is about 6375.8419836128. The cubic root of 40651361 is about 343.8415559540.

Adding to 40651361 its reverse (16315604), we get a palindrome (56966965).

The spelling of 40651361 in words is "forty million, six hundred fifty-one thousand, three hundred sixty-one".