513563265 has 24 divisors (see below), whose sum is σ = 890972160. Its totient is φ = 273655584.

The previous prime is 513563261. The next prime is 513563311. The reversal of 513563265 is 562365315.

513563265 is a `hidden beast` number, since 5 + 13 + 5 + 632 + 6 + 5 = 666.

It is not a de Polignac number, because 513563265 - 2² = 513563261 is a prime.

It is not an unprimeable number, because it can be changed into a prime (513563261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53094 + ... + 62016.

It is an arithmetic number, because the mean of its divisors is an integer number (37123840).

Almost surely, 2^513563265 is an apocalyptic number.

It is an amenable number.

513563265 is a deficient number, since it is larger than the sum of its proper divisors (377408895).

513563265 is a wasteful number, since it uses less digits than its factorization.

513563265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10213 (or 10210 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The square root of 513563265 is about 22661.9342731374. The cubic root of 513563265 is about 800.8133732705.

The spelling of 513563265 in words is "five hundred thirteen million, five hundred sixty-three thousand, two hundred sixty-five".