40045453 has 8 divisors (see below), whose sum is σ = 45840960. Its totient is φ = 34268640.

The previous prime is 40045441. The next prime is 40045487. The reversal of 40045453 is 35454004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40045453 - 2⁹ = 40044941 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 (40045493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273 + ... + 8953.

It is an arithmetic number, because the mean of its divisors is an integer number (5730120).

Almost surely, 2^40045453 is an apocalyptic number.

It is an amenable number.

40045453 is a deficient number, since it is larger than the sum of its proper divisors (5795507).

40045453 is an equidigital number, since it uses as much as digits as its factorization.

40045453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9347.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 40045453 is about 6328.1476752680. The cubic root of 40045453 is about 342.1246795279.

Adding to 40045453 its reverse (35454004), we get a palindrome (75499457).

It can be divided in two parts, 4004 and 5453, that multiplied together give a palindrome (21833812).

The spelling of 40045453 in words is "forty million, forty-five thousand, four hundred fifty-three".