140556497 has 2 divisors, whose sum is σ = 140556498. Its totient is φ = 140556496.

The previous prime is 140556457. The next prime is 140556587. The reversal of 140556497 is 794655041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121859521 + 18696976 = 11039^2 + 4324^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140556497 is a prime.

It is a super-2 number, since 2×140556497² = 39512257697822018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140556457) 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, 70278248 + 70278249.

It is an arithmetic number, because the mean of its divisors is an integer number (70278249).

Almost surely, 2^140556497 is an apocalyptic number.

It is an amenable number.

140556497 is a deficient number, since it is larger than the sum of its proper divisors (1).

140556497 is an equidigital number, since it uses as much as digits as its factorization.

140556497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 140556497 is about 11855.6525337073. The cubic root of 140556497 is about 519.9365023550.

The spelling of 140556497 in words is "one hundred forty million, five hundred fifty-six thousand, four hundred ninety-seven".