513242891 has 8 divisors (see below), whose sum is σ = 590300640. Its totient is φ = 437119488.

The previous prime is 513242887. The next prime is 513242893. The reversal of 513242891 is 198242315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 513242891 - 2² = 513242887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513242893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232406 + ... + 234603.

It is an arithmetic number, because the mean of its divisors is an integer number (73787580).

Almost surely, 2^513242891 is an apocalyptic number.

513242891 is a deficient number, since it is larger than the sum of its proper divisors (77057749).

513242891 is a wasteful number, since it uses less digits than its factorization.

513242891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467173.

The product of its digits is 17280, while the sum is 35.

The square root of 513242891 is about 22654.8646210919. The cubic root of 513242891 is about 800.6468159580.

The spelling of 513242891 in words is "five hundred thirteen million, two hundred forty-two thousand, eight hundred ninety-one".