523145522 has 16 divisors (see below), whose sum is σ = 857682432. Its totient is φ = 238244160.

The previous prime is 523145503. The next prime is 523145531. The reversal of 523145522 is 225541325.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247118 + ... + 249225.

It is an arithmetic number, because the mean of its divisors is an integer number (53605152).

Almost surely, 2^523145522 is an apocalyptic number.

523145522 is a deficient number, since it is larger than the sum of its proper divisors (334536910).

523145522 is a wasteful number, since it uses less digits than its factorization.

523145522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496393.

The product of its digits is 12000, while the sum is 29.

The square root of 523145522 is about 22872.3746471590. The cubic root of 523145522 is about 805.7633395653.

Adding to 523145522 its reverse (225541325), we get a palindrome (748686847).

The spelling of 523145522 in words is "five hundred twenty-three million, one hundred forty-five thousand, five hundred twenty-two".