140588257 has 2 divisors, whose sum is σ = 140588258. Its totient is φ = 140588256.

The previous prime is 140588243. The next prime is 140588267. The reversal of 140588257 is 752885041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112275216 + 28313041 = 10596^2 + 5321^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140588257 is a prime.

It is not a weakly prime, because it can be changed into another prime (140588237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70294128 + 70294129.

It is an arithmetic number, because the mean of its divisors is an integer number (70294129).

Almost surely, 2^140588257 is an apocalyptic number.

It is an amenable number.

140588257 is a deficient number, since it is larger than the sum of its proper divisors (1).

140588257 is an equidigital number, since it uses as much as digits as its factorization.

140588257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 89600, while the sum is 40.

The square root of 140588257 is about 11856.9919035141. The cubic root of 140588257 is about 519.9756608430.

The spelling of 140588257 in words is "one hundred forty million, five hundred eighty-eight thousand, two hundred fifty-seven".