521095 has 8 divisors (see below), whose sum is σ = 632880. Its totient is φ = 411840.

The previous prime is 521063. The next prime is 521107. The reversal of 521095 is 590125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 521095 - 2⁵ = 521063 is a prime.

It is an Ulam number.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 141 + ... + 1030.

It is an arithmetic number, because the mean of its divisors is an integer number (79110).

2⁵²¹⁰⁹⁵ is an apocalyptic number.

521095 is a deficient number, since it is larger than the sum of its proper divisors (111785).

521095 is a wasteful number, since it uses less digits than its factorization.

521095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 521095 is about 721.8691017075. The cubic root of 521095 is about 80.4709204021.

The spelling of 521095 in words is "five hundred twenty-one thousand, ninety-five".