523907 has 2 divisors, whose sum is σ = 523908. Its totient is φ = 523906.

The previous prime is 523903. The next prime is 523927. The reversal of 523907 is 709325.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 523907 - 2² = 523903 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (523903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261953 + 261954.

It is an arithmetic number, because the mean of its divisors is an integer number (261954).

2⁵²³⁹⁰⁷ is an apocalyptic number.

523907 is a deficient number, since it is larger than the sum of its proper divisors (1).

523907 is an equidigital number, since it uses as much as digits as its factorization.

523907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 523907 is about 723.8142026791. The cubic root of 523907 is about 80.6154099925.

The spelling of 523907 in words is "five hundred twenty-three thousand, nine hundred seven".