513223534 has 4 divisors (see below), whose sum is σ = 769835304. Its totient is φ = 256611766.

The previous prime is 513223531. The next prime is 513223537. The reversal of 513223534 is 435322315.

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

It is an interprime number because it is at equal distance from previous prime (513223531) and next prime (513223537).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513223531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128305882 + ... + 128305885.

It is an arithmetic number, because the mean of its divisors is an integer number (192458826).

Almost surely, 2^513223534 is an apocalyptic number.

513223534 is a deficient number, since it is larger than the sum of its proper divisors (256611770).

513223534 is a wasteful number, since it uses less digits than its factorization.

513223534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256611769.

The product of its digits is 10800, while the sum is 28.

The square root of 513223534 is about 22654.4374019749. The cubic root of 513223534 is about 800.6367503435.

Adding to 513223534 its reverse (435322315), we get a palindrome (948545849).

The spelling of 513223534 in words is "five hundred thirteen million, two hundred twenty-three thousand, five hundred thirty-four".