515012077 has 12 divisors (see below), whose sum is σ = 530109684. Its totient is φ = 500165120.

The previous prime is 515012063. The next prime is 515012087. The reversal of 515012077 is 770210515.

It can be written as a sum of positive squares in 6 ways, for example, as 318479716 + 196532361 = 17846^2 + 14019^2 .

It is a de Polignac number, because none of the positive numbers 2^k-515012077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515012027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 676377 + ... + 677137.

It is an arithmetic number, because the mean of its divisors is an integer number (44175807).

Almost surely, 2^515012077 is an apocalyptic number.

It is an amenable number.

515012077 is a deficient number, since it is larger than the sum of its proper divisors (15097607).

515012077 is an equidigital number, since it uses as much as digits as its factorization.

515012077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040 (or 927 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 515012077 is about 22693.8775223627. The cubic root of 515012077 is about 801.5657237415.

The spelling of 515012077 in words is "five hundred fifteen million, twelve thousand, seventy-seven".