140550481 has 2 divisors, whose sum is σ = 140550482. Its totient is φ = 140550480.

The previous prime is 140550463. The next prime is 140550511. The reversal of 140550481 is 184055041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109914256 + 30636225 = 10484^2 + 5535^2 .

It is an emirp because it is prime and its reverse (184055041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140550481 - 2¹³ = 140542289 is a prime.

It is a super-2 number, since 2×140550481² = 39508875418662722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140550181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70275240 + 70275241.

It is an arithmetic number, because the mean of its divisors is an integer number (70275241).

Almost surely, 2^140550481 is an apocalyptic number.

It is an amenable number.

140550481 is a deficient number, since it is larger than the sum of its proper divisors (1).

140550481 is an equidigital number, since it uses as much as digits as its factorization.

140550481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 140550481 is about 11855.3988123555. The cubic root of 140550481 is about 519.9290842641.

The spelling of 140550481 in words is "one hundred forty million, five hundred fifty thousand, four hundred eighty-one".