513161145 has 24 divisors (see below), whose sum is σ = 1016548416. Its totient is φ = 234587808.

The previous prime is 513161113. The next prime is 513161147. The reversal of 513161145 is 541161315.

513161145 is a `hidden beast` number, since 5 + 1 + 3 + 1 + 611 + 45 = 666.

513161145 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 513161145 - 2⁵ = 513161113 is a prime.

It is a super-2 number, since 2×513161145² = 526668721475422050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (513161147) 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, 814227 + ... + 814856.

It is an arithmetic number, because the mean of its divisors is an integer number (42356184).

Almost surely, 2^513161145 is an apocalyptic number.

It is an amenable number.

513161145 is a deficient number, since it is larger than the sum of its proper divisors (503387271).

513161145 is a wasteful number, since it uses less digits than its factorization.

513161145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1629101 (or 1629098 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 513161145 is about 22653.0603892719. The cubic root of 513161145 is about 800.6043064231.

The spelling of 513161145 in words is "five hundred thirteen million, one hundred sixty-one thousand, one hundred forty-five".