140515457 has 2 divisors, whose sum is σ = 140515458. Its totient is φ = 140515456.

The previous prime is 140515451. The next prime is 140515481. The reversal of 140515457 is 754515041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88661056 + 51854401 = 9416^2 + 7201^2 .

It is a cyclic number.

It is not a de Polignac number, because 140515457 - 2¹⁸ = 140253313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140515451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70257728 + 70257729.

It is an arithmetic number, because the mean of its divisors is an integer number (70257729).

Almost surely, 2^140515457 is an apocalyptic number.

It is an amenable number.

140515457 is a deficient number, since it is larger than the sum of its proper divisors (1).

140515457 is an equidigital number, since it uses as much as digits as its factorization.

140515457 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 32.

The square root of 140515457 is about 11853.9215873904. The cubic root of 140515457 is about 519.8858933552.

The spelling of 140515457 in words is "one hundred forty million, five hundred fifteen thousand, four hundred fifty-seven".