521448575 has 6 divisors (see below), whose sum is σ = 646596264. Its totient is φ = 417158840.

The previous prime is 521448553. The next prime is 521448583. The reversal of 521448575 is 575844125.

It is not a de Polignac number, because 521448575 - 2¹² = 521444479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10428947 + ... + 10428996.

It is an arithmetic number, because the mean of its divisors is an integer number (107766044).

Almost surely, 2^521448575 is an apocalyptic number.

521448575 is a deficient number, since it is larger than the sum of its proper divisors (125147689).

521448575 is a wasteful number, since it uses less digits than its factorization.

521448575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20857953 (or 20857948 counting only the distinct ones).

The product of its digits is 224000, while the sum is 41.

The square root of 521448575 is about 22835.2485206533. The cubic root of 521448575 is about 804.8911674687.

The spelling of 521448575 in words is "five hundred twenty-one million, four hundred forty-eight thousand, five hundred seventy-five".