575666520 has 128 divisors (see below), whose sum is σ = 2028983040. Its totient is φ = 128816640.

The previous prime is 575666519. The next prime is 575666521. The reversal of 575666520 is 25666575.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (575666519) and next prime (575666521).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (575666521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 387 + ... + 33933.

It is an arithmetic number, because the mean of its divisors is an integer number (15851430).

Almost surely, 2^575666520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 575666520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1014491520).

575666520 is an abundant number, since it is smaller than the sum of its proper divisors (1453316520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

575666520 is a wasteful number, since it uses less digits than its factorization.

575666520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33585 (or 33581 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 42.

The square root of 575666520 is about 23993.0514941305. The cubic root of 575666520 is about 831.8729273077.

Subtracting from 575666520 its reverse (25666575), we obtain a palindrome (549999945).

The spelling of 575666520 in words is "five hundred seventy-five million, six hundred sixty-six thousand, five hundred twenty".