523512011 has 4 divisors (see below), whose sum is σ = 571104024. Its totient is φ = 475920000.

The previous prime is 523511881. The next prime is 523512019. The reversal of 523512011 is 110215325.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 523512011 - 2¹⁴ = 523495627 is a prime.

It is a super-2 number, since 2×523512011² = 548129651322528242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523512019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23795990 + ... + 23796011.

It is an arithmetic number, because the mean of its divisors is an integer number (142776006).

Almost surely, 2^523512011 is an apocalyptic number.

523512011 is a deficient number, since it is larger than the sum of its proper divisors (47592013).

523512011 is a wasteful number, since it uses less digits than its factorization.

523512011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47592012.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 523512011 is about 22880.3848525325. The cubic root of 523512011 is about 805.9514545077.

Adding to 523512011 its reverse (110215325), we get a palindrome (633727336).

The spelling of 523512011 in words is "five hundred twenty-three million, five hundred twelve thousand, eleven".