513379247 has 4 divisors (see below), whose sum is σ = 515812536. Its totient is φ = 510945960.

The previous prime is 513379241. The next prime is 513379291. The reversal of 513379247 is 742973315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 513379247 - 2⁴ = 513379231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513379241) 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, 1216328 + ... + 1216749.

It is an arithmetic number, because the mean of its divisors is an integer number (128953134).

Almost surely, 2^513379247 is an apocalyptic number.

513379247 is a deficient number, since it is larger than the sum of its proper divisors (2433289).

513379247 is a wasteful number, since it uses less digits than its factorization.

513379247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2433288.

The product of its digits is 158760, while the sum is 41.

The square root of 513379247 is about 22657.8738411176. The cubic root of 513379247 is about 800.7177137287.

The spelling of 513379247 in words is "five hundred thirteen million, three hundred seventy-nine thousand, two hundred forty-seven".