140557 has 2 divisors, whose sum is σ = 140558. Its totient is φ = 140556.

The previous prime is 140551. The next prime is 140587. The reversal of 140557 is 755041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137641 + 2916 = 371^2 + 54^2 .

It is a cyclic number.

It is not a de Polignac number, because 140557 - 2³ = 140549 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70278 + 70279.

It is an arithmetic number, because the mean of its divisors is an integer number (70279).

2¹⁴⁰⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

140557 is a deficient number, since it is larger than the sum of its proper divisors (1).

140557 is an equidigital number, since it uses as much as digits as its factorization.

140557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 140557 is about 374.9093223701. The cubic root of 140557 is about 51.9937122575.

Adding to 140557 its reverse (755041), we get a palindrome (895598).

The spelling of 140557 in words is "one hundred forty thousand, five hundred fifty-seven".