40255321 has 2 divisors, whose sum is σ = 40255322. Its totient is φ = 40255320.

The previous prime is 40255307. The next prime is 40255343. The reversal of 40255321 is 12355204.

It is an a-pointer prime, because the next prime (40255343) can be obtained adding 40255321 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36433296 + 3822025 = 6036^2 + 1955^2 .

It is a cyclic number.

It is not a de Polignac number, because 40255321 - 2⁵ = 40255289 is a prime.

It is equal to p_2448202 and since 40255321 and 2448202 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 40255292 and 40255301.

It is not a weakly prime, because it can be changed into another prime (40255301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20127660 + 20127661.

It is an arithmetic number, because the mean of its divisors is an integer number (20127661).

Almost surely, 2^40255321 is an apocalyptic number.

It is an amenable number.

40255321 is a deficient number, since it is larger than the sum of its proper divisors (1).

40255321 is an equidigital number, since it uses as much as digits as its factorization.

40255321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 40255321 is about 6344.7081099133. The cubic root of 40255321 is about 342.7213012042.

The spelling of 40255321 in words is "forty million, two hundred fifty-five thousand, three hundred twenty-one".