40513273 has 2 divisors, whose sum is σ = 40513274. Its totient is φ = 40513272.

The previous prime is 40513241. The next prime is 40513279. The reversal of 40513273 is 37231504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39287824 + 1225449 = 6268^2 + 1107^2 .

It is a cyclic number.

It is not a de Polignac number, because 40513273 - 2⁵ = 40513241 is a prime.

It is not a weakly prime, because it can be changed into another prime (40513279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20256636 + 20256637.

It is an arithmetic number, because the mean of its divisors is an integer number (20256637).

Almost surely, 2^40513273 is an apocalyptic number.

It is an amenable number.

40513273 is a deficient number, since it is larger than the sum of its proper divisors (1).

40513273 is an equidigital number, since it uses as much as digits as its factorization.

40513273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 40513273 is about 6365.0037706195. The cubic root of 40513273 is about 343.4517842046.

Adding to 40513273 its reverse (37231504), we get a palindrome (77744777).

The spelling of 40513273 in words is "forty million, five hundred thirteen thousand, two hundred seventy-three".