523145072 has 20 divisors (see below), whose sum is σ = 1040989176. Its totient is φ = 254502720.

The previous prime is 523145071. The next prime is 523145081. The reversal of 523145072 is 270541325.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523145071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441254 + ... + 442437.

Almost surely, 2^523145072 is an apocalyptic number.

It is an amenable number.

523145072 is a deficient number, since it is larger than the sum of its proper divisors (517844104).

523145072 is a wasteful number, since it uses less digits than its factorization.

523145072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883736 (or 883730 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 523145072 is about 22872.3648099623. The cubic root of 523145072 is about 805.7631085310.

Adding to 523145072 its reverse (270541325), we get a palindrome (793686397).

The spelling of 523145072 in words is "five hundred twenty-three million, one hundred forty-five thousand, seventy-two".