140535601 has 2 divisors, whose sum is σ = 140535602. Its totient is φ = 140535600.

The previous prime is 140535599. The next prime is 140535611. The reversal of 140535601 is 106535041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129413376 + 11122225 = 11376^2 + 3335^2 .

It is a cyclic number.

It is not a de Polignac number, because 140535601 - 2¹ = 140535599 is a prime.

Together with 140535599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (140535611) 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, 70267800 + 70267801.

It is an arithmetic number, because the mean of its divisors is an integer number (70267801).

Almost surely, 2^140535601 is an apocalyptic number.

It is an amenable number.

140535601 is a deficient number, since it is larger than the sum of its proper divisors (1).

140535601 is an equidigital number, since it uses as much as digits as its factorization.

140535601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 140535601 is about 11854.7712335582. The cubic root of 140535601 is about 519.9107354171.

The spelling of 140535601 in words is "one hundred forty million, five hundred thirty-five thousand, six hundred one".