513928497 has 4 divisors (see below), whose sum is σ = 685238000. Its totient is φ = 342618996.

The previous prime is 513928451. The next prime is 513928507. The reversal of 513928497 is 794829315.

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 not a de Polignac number, because 513928497 - 2⁷ = 513928369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513928427) 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, 85654747 + ... + 85654752.

It is an arithmetic number, because the mean of its divisors is an integer number (171309500).

Almost surely, 2^513928497 is an apocalyptic number.

It is an amenable number.

513928497 is a deficient number, since it is larger than the sum of its proper divisors (171309503).

513928497 is a wasteful number, since it uses less digits than its factorization.

513928497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171309502.

The product of its digits is 544320, while the sum is 48.

The square root of 513928497 is about 22669.9911115995. The cubic root of 513928497 is about 801.0031670648.

The spelling of 513928497 in words is "five hundred thirteen million, nine hundred twenty-eight thousand, four hundred ninety-seven".