40065253 has 4 divisors (see below), whose sum is σ = 40078060. Its totient is φ = 40052448.

The previous prime is 40065251. The next prime is 40065257. The reversal of 40065253 is 35256004.

40065253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 30835809 + 9229444 = 5553^2 + 3038^2 .

It is a cyclic number.

It is not a de Polignac number, because 40065253 - 2¹ = 40065251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40065251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1753 + ... + 9121.

It is an arithmetic number, because the mean of its divisors is an integer number (10019515).

Almost surely, 2^40065253 is an apocalyptic number.

It is an amenable number.

40065253 is a deficient number, since it is larger than the sum of its proper divisors (12807).

40065253 is an equidigital number, since it uses as much as digits as its factorization.

40065253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12806.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 40065253 is about 6329.7119207749. The cubic root of 40065253 is about 342.1810567360.

Subtracting from 40065253 its reverse (35256004), we obtain a square (4809249 = 2193²).

The spelling of 40065253 in words is "forty million, sixty-five thousand, two hundred fifty-three".