140556061 has 2 divisors, whose sum is σ = 140556062. Its totient is φ = 140556060.

The previous prime is 140556043. The next prime is 140556071. The reversal of 140556061 is 160655041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92044836 + 48511225 = 9594^2 + 6965^2 .

It is a cyclic number.

It is not a de Polignac number, because 140556061 - 2⁵ = 140556029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140556001) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70278030 + 70278031.

It is an arithmetic number, because the mean of its divisors is an integer number (70278031).

Almost surely, 2^140556061 is an apocalyptic number.

It is an amenable number.

140556061 is a deficient number, since it is larger than the sum of its proper divisors (1).

140556061 is an equidigital number, since it uses as much as digits as its factorization.

140556061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 140556061 is about 11855.6341458397. The cubic root of 140556061 is about 519.9359647479.

The spelling of 140556061 in words is "one hundred forty million, five hundred fifty-six thousand, sixty-one".