523612534 has 4 divisors (see below), whose sum is σ = 785418804. Its totient is φ = 261806266.

The previous prime is 523612519. The next prime is 523612601. The reversal of 523612534 is 435216325.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 523612496 and 523612505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130903132 + ... + 130903135.

It is an arithmetic number, because the mean of its divisors is an integer number (196354701).

Almost surely, 2^523612534 is an apocalyptic number.

523612534 is a deficient number, since it is larger than the sum of its proper divisors (261806270).

523612534 is a wasteful number, since it uses less digits than its factorization.

523612534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261806269.

The product of its digits is 21600, while the sum is 31.

The square root of 523612534 is about 22882.5814540231. The cubic root of 523612534 is about 806.0030365608.

Adding to 523612534 its reverse (435216325), we get a palindrome (958828859).

The spelling of 523612534 in words is "five hundred twenty-three million, six hundred twelve thousand, five hundred thirty-four".