513727565 has 16 divisors (see below), whose sum is σ = 664398336. Its totient is φ = 379080000.

The previous prime is 513727561. The next prime is 513727597. The reversal of 513727565 is 565727315.

It is not a de Polignac number, because 513727565 - 2² = 513727561 is a prime.

It is a super-2 number, since 2×513727565² = 527832022081658450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513727561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124790 + ... + 128840.

It is an arithmetic number, because the mean of its divisors is an integer number (41524896).

Almost surely, 2^513727565 is an apocalyptic number.

It is an amenable number.

513727565 is a deficient number, since it is larger than the sum of its proper divisors (150670771).

513727565 is a wasteful number, since it uses less digits than its factorization.

513727565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6020.

The product of its digits is 220500, while the sum is 41.

The square root of 513727565 is about 22665.5590047984. The cubic root of 513727565 is about 800.8987633399.

The spelling of 513727565 in words is "five hundred thirteen million, seven hundred twenty-seven thousand, five hundred sixty-five".