40543253 has 2 divisors, whose sum is σ = 40543254. Its totient is φ = 40543252.

The previous prime is 40543229. The next prime is 40543267. The reversal of 40543253 is 35234504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39413284 + 1129969 = 6278^2 + 1063^2 .

It is a cyclic number.

It is not a de Polignac number, because 40543253 - 2¹⁴ = 40526869 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40543553) 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, 20271626 + 20271627.

It is an arithmetic number, because the mean of its divisors is an integer number (20271627).

Almost surely, 2^40543253 is an apocalyptic number.

It is an amenable number.

40543253 is a deficient number, since it is larger than the sum of its proper divisors (1).

40543253 is an equidigital number, since it uses as much as digits as its factorization.

40543253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 40543253 is about 6367.3584004672. The cubic root of 40543253 is about 343.5364819255.

Adding to 40543253 its reverse (35234504), we get a palindrome (75777757).

The spelling of 40543253 in words is "forty million, five hundred forty-three thousand, two hundred fifty-three".