40357 has 2 divisors, whose sum is σ = 40358. Its totient is φ = 40356.

The previous prime is 40351. The next prime is 40361. The reversal of 40357 is 75304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23716 + 16641 = 154^2 + 129^2 .

It is a cyclic number.

It is not a de Polignac number, because 40357 - 2¹⁵ = 7589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20178 + 20179.

It is an arithmetic number, because the mean of its divisors is an integer number (20179).

2⁴⁰³⁵⁷ is an apocalyptic number.

It is an amenable number.

40357 is a deficient number, since it is larger than the sum of its proper divisors (1).

40357 is an equidigital number, since it uses as much as digits as its factorization.

40357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 40357 is about 200.8905174467. The cubic root of 40357 is about 34.3009613072.

The spelling of 40357 in words is "forty thousand, three hundred fifty-seven".