40057497 has 20 divisors (see below), whose sum is σ = 61906020. Its totient is φ = 25782624.

The previous prime is 40057481. The next prime is 40057531. The reversal of 40057497 is 79475004.

It is a happy number.

40057497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 17816841 + 22240656 = 4221^2 + 4716^2 .

It is not a de Polignac number, because 40057497 - 2⁴ = 40057481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40057417) 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 19 ways as a sum of consecutive naturals, for example, 6178 + ... + 10875.

It is an arithmetic number, because the mean of its divisors is an integer number (3095301).

Almost surely, 2^40057497 is an apocalyptic number.

It is an amenable number.

40057497 is a deficient number, since it is larger than the sum of its proper divisors (21848523).

40057497 is a wasteful number, since it uses less digits than its factorization.

40057497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17094 (or 17085 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 40057497 is about 6329.0992250082. The cubic root of 40057497 is about 342.1589750288.

The spelling of 40057497 in words is "forty million, fifty-seven thousand, four hundred ninety-seven".