40545253 has 4 divisors (see below), whose sum is σ = 46337440. Its totient is φ = 34753068.

The previous prime is 40545223. The next prime is 40545257. The reversal of 40545253 is 35254504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40545253 - 2¹⁷ = 40414181 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 (40545257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2896083 + ... + 2896096.

It is an arithmetic number, because the mean of its divisors is an integer number (11584360).

Almost surely, 2^40545253 is an apocalyptic number.

It is an amenable number.

40545253 is a deficient number, since it is larger than the sum of its proper divisors (5792187).

40545253 is an equidigital number, since it uses as much as digits as its factorization.

40545253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5792186.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 40545253 is about 6367.5154495297. The cubic root of 40545253 is about 343.5421307213.

Adding to 40545253 its reverse (35254504), we get a palindrome (75799757).

The spelling of 40545253 in words is "forty million, five hundred forty-five thousand, two hundred fifty-three".