40345503 has 32 divisors (see below), whose sum is σ = 60936192. Its totient is φ = 23529600.

The previous prime is 40345499. The next prime is 40345523. The reversal of 40345503 is 30554304.

It is a happy number.

It is not a de Polignac number, because 40345503 - 2² = 40345499 is a prime.

It is a super-2 number, since 2×40345503² = 3255519224646018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40345523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 211138 + ... + 211328.

It is an arithmetic number, because the mean of its divisors is an integer number (1904256).

Almost surely, 2^40345503 is an apocalyptic number.

40345503 is a deficient number, since it is larger than the sum of its proper divisors (20590689).

40345503 is a wasteful number, since it uses less digits than its factorization.

40345503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415.

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 40345503 is about 6351.8110015963. The cubic root of 40345503 is about 342.9770375083.

Adding to 40345503 its reverse (30554304), we get a palindrome (70899807).

It can be divided in two parts, 40 and 345503, that added together give a palindrome (345543).

The spelling of 40345503 in words is "forty million, three hundred forty-five thousand, five hundred three".