140518057 has 2 divisors, whose sum is σ = 140518058. Its totient is φ = 140518056.

The previous prime is 140517991. The next prime is 140518069. The reversal of 140518057 is 750815041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116985856 + 23532201 = 10816^2 + 4851^2 .

It is a cyclic number.

It is not a de Polignac number, because 140518057 - 2²³ = 132129449 is a prime.

It is not a weakly prime, because it can be changed into another prime (140518657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70259028 + 70259029.

It is an arithmetic number, because the mean of its divisors is an integer number (70259029).

Almost surely, 2^140518057 is an apocalyptic number.

It is an amenable number.

140518057 is a deficient number, since it is larger than the sum of its proper divisors (1).

140518057 is an equidigital number, since it uses as much as digits as its factorization.

140518057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 140518057 is about 11854.0312552313. The cubic root of 140518057 is about 519.8890998708.

The spelling of 140518057 in words is "one hundred forty million, five hundred eighteen thousand, fifty-seven".