513907 has 4 divisors (see below), whose sum is σ = 515736. Its totient is φ = 512080.

The previous prime is 513899. The next prime is 513917. The reversal of 513907 is 709315.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 709315 = 5 ⋅141863.

It is a cyclic number.

It is not a de Polignac number, because 513907 - 2³ = 513899 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 513907.

It is not an unprimeable number, because it can be changed into a prime (513917) 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, 394 + ... + 1087.

It is an arithmetic number, because the mean of its divisors is an integer number (128934).

2⁵¹³⁹⁰⁷ is an apocalyptic number.

513907 is a deficient number, since it is larger than the sum of its proper divisors (1829).

513907 is a wasteful number, since it uses less digits than its factorization.

513907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828.

The product of its (nonzero) digits is 945, while the sum is 25.

The square root of 513907 is about 716.8730710523. The cubic root of 513907 is about 80.0991998582.

The spelling of 513907 in words is "five hundred thirteen thousand, nine hundred seven".