140544557 has 2 divisors, whose sum is σ = 140544558. Its totient is φ = 140544556.

The previous prime is 140544517. The next prime is 140544583. The reversal of 140544557 is 755445041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126810121 + 13734436 = 11261^2 + 3706^2 .

It is a cyclic number.

It is not a de Polignac number, because 140544557 - 2¹⁴ = 140528173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140544517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70272278 + 70272279.

It is an arithmetic number, because the mean of its divisors is an integer number (70272279).

Almost surely, 2^140544557 is an apocalyptic number.

It is an amenable number.

140544557 is a deficient number, since it is larger than the sum of its proper divisors (1).

140544557 is an equidigital number, since it uses as much as digits as its factorization.

140544557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56000, while the sum is 35.

The square root of 140544557 is about 11855.1489657448. The cubic root of 140544557 is about 519.9217794079.

Adding to 140544557 its reverse (755445041), we get a palindrome (895989598).

The spelling of 140544557 in words is "one hundred forty million, five hundred forty-four thousand, five hundred fifty-seven".