515140705 has 4 divisors (see below), whose sum is σ = 618168852. Its totient is φ = 412112560.

The previous prime is 515140667. The next prime is 515140709. The reversal of 515140705 is 507041515.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 507041515 = 5 ⋅101408303.

It can be written as a sum of positive squares in 2 ways, for example, as 230341329 + 284799376 = 15177^2 + 16876^2 .

It is not a de Polignac number, because 515140705 - 2¹⁷ = 515009633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (515140709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51514066 + ... + 51514075.

It is an arithmetic number, because the mean of its divisors is an integer number (154542213).

Almost surely, 2^515140705 is an apocalyptic number.

It is an amenable number.

515140705 is a deficient number, since it is larger than the sum of its proper divisors (103028147).

515140705 is a wasteful number, since it uses less digits than its factorization.

515140705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103028146.

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 515140705 is about 22696.7113256524. The cubic root of 515140705 is about 801.6324504702.

The spelling of 515140705 in words is "five hundred fifteen million, one hundred forty thousand, seven hundred five".