40503145 has 4 divisors (see below), whose sum is σ = 48603780. Its totient is φ = 32402512.

The previous prime is 40503137. The next prime is 40503149. The reversal of 40503145 is 54130504.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15342889 + 25160256 = 3917^2 + 5016^2 .

It is a cyclic number.

It is not a de Polignac number, because 40503145 - 2³ = 40503137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40503149) 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, 4050310 + ... + 4050319.

It is an arithmetic number, because the mean of its divisors is an integer number (12150945).

Almost surely, 2^40503145 is an apocalyptic number.

It is an amenable number.

40503145 is a deficient number, since it is larger than the sum of its proper divisors (8100635).

40503145 is an equidigital number, since it uses as much as digits as its factorization.

40503145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8100634.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 40503145 is about 6364.2081204184. The cubic root of 40503145 is about 343.4231617366.

Adding to 40503145 its reverse (54130504), we get a palindrome (94633649).

The spelling of 40503145 in words is "forty million, five hundred three thousand, one hundred forty-five".