40503157 has 4 divisors (see below), whose sum is σ = 41073696. Its totient is φ = 39932620.

The previous prime is 40503149. The next prime is 40503167. The reversal of 40503157 is 75130504.

40503157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 40503157 - 2³ = 40503149 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 (40503107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285163 + ... + 285304.

It is an arithmetic number, because the mean of its divisors is an integer number (10268424).

Almost surely, 2^40503157 is an apocalyptic number.

It is an amenable number.

40503157 is a deficient number, since it is larger than the sum of its proper divisors (570539).

40503157 is an equidigital number, since it uses as much as digits as its factorization.

40503157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570538.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 40503157 is about 6364.2090631908. The cubic root of 40503157 is about 343.4231956523.

The spelling of 40503157 in words is "forty million, five hundred three thousand, one hundred fifty-seven".