523145134 has 4 divisors (see below), whose sum is σ = 784717704. Its totient is φ = 261572566.

The previous prime is 523145101. The next prime is 523145159. The reversal of 523145134 is 431541325.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130786282 + ... + 130786285.

It is an arithmetic number, because the mean of its divisors is an integer number (196179426).

Almost surely, 2^523145134 is an apocalyptic number.

523145134 is a deficient number, since it is larger than the sum of its proper divisors (261572570).

523145134 is a wasteful number, since it uses less digits than its factorization.

523145134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261572569.

The product of its digits is 7200, while the sum is 28.

The square root of 523145134 is about 22872.3661653096. The cubic root of 523145134 is about 805.7631403624.

Adding to 523145134 its reverse (431541325), we get a palindrome (954686459).

The spelling of 523145134 in words is "five hundred twenty-three million, one hundred forty-five thousand, one hundred thirty-four".