521954 has 8 divisors (see below), whose sum is σ = 786000. Its totient is φ = 259956.

The previous prime is 521929. The next prime is 521981. The reversal of 521954 is 459125.

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

It is an unprimeable number.

521954 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 3 ways as a sum of consecutive naturals, for example, 737 + ... + 1259.

It is an arithmetic number, because the mean of its divisors is an integer number (98250).

2⁵²¹⁹⁵⁴ is an apocalyptic number.

521954 is a deficient number, since it is larger than the sum of its proper divisors (264046).

521954 is a wasteful number, since it uses less digits than its factorization.

521954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024.

The product of its digits is 1800, while the sum is 26.

The square root of 521954 is about 722.4638399256. The cubic root of 521954 is about 80.5151136058.

The spelling of 521954 in words is "five hundred twenty-one thousand, nine hundred fifty-four".