523087 has 4 divisors (see below), whose sum is σ = 524536. Its totient is φ = 521640.

The previous prime is 523049. The next prime is 523093. The reversal of 523087 is 780325.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 523087 - 2⁷ = 522959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523007) 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, 313 + ... + 1069.

It is an arithmetic number, because the mean of its divisors is an integer number (131134).

2⁵²³⁰⁸⁷ is an apocalyptic number.

523087 is a deficient number, since it is larger than the sum of its proper divisors (1449).

523087 is an equidigital number, since it uses as much as digits as its factorization.

523087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 523087 is about 723.2475371545. The cubic root of 523087 is about 80.5733292705.

The spelling of 523087 in words is "five hundred twenty-three thousand, eighty-seven".