523745 has 12 divisors (see below), whose sum is σ = 655380. Its totient is φ = 401760.

The previous prime is 523741. The next prime is 523759. The reversal of 523745 is 547325.

It can be written as a sum of positive squares in 2 ways, for example, as 277729 + 246016 = 527^2 + 496^2 .

It is not a de Polignac number, because 523745 - 2² = 523741 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (523741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4751 + ... + 4859.

It is an arithmetic number, because the mean of its divisors is an integer number (54615).

2⁵²³⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

523745 is a deficient number, since it is larger than the sum of its proper divisors (131635).

523745 is a wasteful number, since it uses less digits than its factorization.

523745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 145 counting only the distinct ones).

The product of its digits is 4200, while the sum is 26.

The square root of 523745 is about 723.7022868556. The cubic root of 523745 is about 80.6070999663.

The spelling of 523745 in words is "five hundred twenty-three thousand, seven hundred forty-five".