513223497 has 24 divisors (see below), whose sum is σ = 785616000. Its totient is φ = 321949728.

The previous prime is 513223483. The next prime is 513223499. The reversal of 513223497 is 794322315.

513223497 is a `hidden beast` number, since 513 + 22 + 34 + 97 = 666.

It is not a de Polignac number, because 513223497 - 2⁷ = 513223369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (513223499) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15408 + ... + 35550.

It is an arithmetic number, because the mean of its divisors is an integer number (32734000).

Almost surely, 2^513223497 is an apocalyptic number.

513223497 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

513223497 is a deficient number, since it is larger than the sum of its proper divisors (272392503).

513223497 is a wasteful number, since it uses less digits than its factorization.

513223497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20317 (or 20314 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 513223497 is about 22654.4365853578. The cubic root of 513223497 is about 800.6367311033.

The spelling of 513223497 in words is "five hundred thirteen million, two hundred twenty-three thousand, four hundred ninety-seven".