523611145 has 4 divisors (see below), whose sum is σ = 628333380. Its totient is φ = 418888912.

The previous prime is 523611133. The next prime is 523611149. The reversal of 523611145 is 541116325.

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

It can be written as a sum of positive squares in 2 ways, for example, as 177502329 + 346108816 = 13323^2 + 18604^2 .

It is a cyclic number.

It is not a de Polignac number, because 523611145 - 2¹⁹ = 523086857 is a prime.

It is a super-2 number, since 2×523611145² = 548337262336422050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (523611149) 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, 52361110 + ... + 52361119.

It is an arithmetic number, because the mean of its divisors is an integer number (157083345).

Almost surely, 2^523611145 is an apocalyptic number.

It is an amenable number.

523611145 is a deficient number, since it is larger than the sum of its proper divisors (104722235).

523611145 is a wasteful number, since it uses less digits than its factorization.

523611145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104722234.

The product of its digits is 3600, while the sum is 28.

The square root of 523611145 is about 22882.5511034063. The cubic root of 523611145 is about 806.0023238588.

The spelling of 523611145 in words is "five hundred twenty-three million, six hundred eleven thousand, one hundred forty-five".