140455057 has 2 divisors, whose sum is σ = 140455058. Its totient is φ = 140455056.

The previous prime is 140455019. The next prime is 140455109. The reversal of 140455057 is 750554041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80299521 + 60155536 = 8961^2 + 7756^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140455057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140455957) 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, 70227528 + 70227529.

It is an arithmetic number, because the mean of its divisors is an integer number (70227529).

Almost surely, 2^140455057 is an apocalyptic number.

It is an amenable number.

140455057 is a deficient number, since it is larger than the sum of its proper divisors (1).

140455057 is an equidigital number, since it uses as much as digits as its factorization.

140455057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 140455057 is about 11851.3736334654. The cubic root of 140455057 is about 519.8113923978.

The spelling of 140455057 in words is "one hundred forty million, four hundred fifty-five thousand, fifty-seven".