513667540 has 12 divisors (see below), whose sum is σ = 1078701876. Its totient is φ = 205467008.

The previous prime is 513667537. The next prime is 513667541. The reversal of 513667540 is 45766315.

It can be written as a sum of positive squares in 2 ways, for example, as 299220804 + 214446736 = 17298^2 + 14644^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 513667540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513667541) 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, 12841669 + ... + 12841708.

It is an arithmetic number, because the mean of its divisors is an integer number (89891823).

Almost surely, 2^513667540 is an apocalyptic number.

It is an amenable number.

513667540 is an abundant number, since it is smaller than the sum of its proper divisors (565034336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513667540 is a wasteful number, since it uses less digits than its factorization.

513667540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25683386 (or 25683384 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 513667540 is about 22664.2348205273. The cubic root of 513667540 is about 800.8675692311.

The spelling of 513667540 in words is "five hundred thirteen million, six hundred sixty-seven thousand, five hundred forty".