513765097 has 4 divisors (see below), whose sum is σ = 522473040. Its totient is φ = 505057156.

The previous prime is 513765089. The next prime is 513765113. The reversal of 513765097 is 790567315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 513765097 - 2³ = 513765089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513765047) 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, 4353883 + ... + 4354000.

It is an arithmetic number, because the mean of its divisors is an integer number (130618260).

Almost surely, 2^513765097 is an apocalyptic number.

It is an amenable number.

513765097 is a deficient number, since it is larger than the sum of its proper divisors (8707943).

513765097 is an equidigital number, since it uses as much as digits as its factorization.

513765097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8707942.

The product of its (nonzero) digits is 198450, while the sum is 43.

The square root of 513765097 is about 22666.3869419014. The cubic root of 513765097 is about 800.9182669332.

The spelling of 513765097 in words is "five hundred thirteen million, seven hundred sixty-five thousand, ninety-seven".