521054 has 4 divisors (see below), whose sum is σ = 781584. Its totient is φ = 260526.

The previous prime is 521051. The next prime is 521063. The reversal of 521054 is 450125.

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

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 521054.

It is not an unprimeable number, because it can be changed into a prime (521051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130262 + ... + 130265.

It is an arithmetic number, because the mean of its divisors is an integer number (195396).

2⁵²¹⁰⁵⁴ is an apocalyptic number.

521054 is a deficient number, since it is larger than the sum of its proper divisors (260530).

521054 is a wasteful number, since it uses less digits than its factorization.

521054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260529.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 521054 is about 721.8407026484. The cubic root of 521054 is about 80.4688098501.

Adding to 521054 its reverse (450125), we get a palindrome (971179).

The spelling of 521054 in words is "five hundred twenty-one thousand, fifty-four".