140553461 has 2 divisors, whose sum is σ = 140553462. Its totient is φ = 140553460.

The previous prime is 140553419. The next prime is 140553463. The reversal of 140553461 is 164355041.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104673361 + 35880100 = 10231^2 + 5990^2 .

It is a cyclic number.

It is not a de Polignac number, because 140553461 - 2¹⁸ = 140291317 is a prime.

It is a Sophie Germain prime.

Together with 140553463, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140553463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70276730 + 70276731.

It is an arithmetic number, because the mean of its divisors is an integer number (70276731).

Almost surely, 2^140553461 is an apocalyptic number.

It is an amenable number.

140553461 is a deficient number, since it is larger than the sum of its proper divisors (1).

140553461 is an equidigital number, since it uses as much as digits as its factorization.

140553461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 140553461 is about 11855.5244928261. The cubic root of 140553461 is about 519.9327588103.

The spelling of 140553461 in words is "one hundred forty million, five hundred fifty-three thousand, four hundred sixty-one".