320527 has 4 divisors (see below), whose sum is σ = 322056. Its totient is φ = 319000.

The previous prime is 320521. The next prime is 320533. The reversal of 320527 is 725023.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (320521) and next prime (320533).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320527 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320521) 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, 388 + ... + 889.

It is an arithmetic number, because the mean of its divisors is an integer number (80514).

2³²⁰⁵²⁷ is an apocalyptic number.

320527 is a deficient number, since it is larger than the sum of its proper divisors (1529).

320527 is a wasteful number, since it uses less digits than its factorization.

320527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 320527 is about 566.1510399178. The cubic root of 320527 is about 68.4365654953.

Subtracting 320527 from its reverse (725023), we obtain a square (404496 = 636²).

The spelling of 320527 in words is "three hundred twenty thousand, five hundred twenty-seven".