140510561 has 2 divisors, whose sum is σ = 140510562. Its totient is φ = 140510560.

The previous prime is 140510551. The next prime is 140510599. The reversal of 140510561 is 165015041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127260961 + 13249600 = 11281^2 + 3640^2 .

It is a cyclic number.

It is not a de Polignac number, because 140510561 - 2¹⁴ = 140494177 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140510501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70255280 + 70255281.

It is an arithmetic number, because the mean of its divisors is an integer number (70255281).

Almost surely, 2^140510561 is an apocalyptic number.

It is an amenable number.

140510561 is a deficient number, since it is larger than the sum of its proper divisors (1).

140510561 is an equidigital number, since it uses as much as digits as its factorization.

140510561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 140510561 is about 11853.7150716558. The cubic root of 140510561 is about 519.8798551325.

The spelling of 140510561 in words is "one hundred forty million, five hundred ten thousand, five hundred sixty-one".