40503223 has 4 divisors (see below), whose sum is σ = 40920880. Its totient is φ = 40085568.

The previous prime is 40503187. The next prime is 40503233. The reversal of 40503223 is 32230504.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40503223 - 2¹⁷ = 40372151 is a prime.

It is a super-2 number, since 2×40503223² = 3281022146775458, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40503223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40503233) 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, 208683 + ... + 208876.

It is an arithmetic number, because the mean of its divisors is an integer number (10230220).

Almost surely, 2^40503223 is an apocalyptic number.

40503223 is a deficient number, since it is larger than the sum of its proper divisors (417657).

40503223 is an equidigital number, since it uses as much as digits as its factorization.

40503223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417656.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 40503223 is about 6364.2142484363. The cubic root of 40503223 is about 343.4233821886.

Adding to 40503223 its reverse (32230504), we get a palindrome (72733727).

The spelling of 40503223 in words is "forty million, five hundred three thousand, two hundred twenty-three".