875355521 has 4 divisors (see below), whose sum is σ = 887684544. Its totient is φ = 863026500.

The previous prime is 875355511. The next prime is 875355527. The reversal of 875355521 is 125553578.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 875355521 - 2⁶ = 875355457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (875355527) 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, 6164405 + ... + 6164546.

It is an arithmetic number, because the mean of its divisors is an integer number (221921136).

Almost surely, 2^875355521 is an apocalyptic number.

It is an amenable number.

875355521 is a deficient number, since it is larger than the sum of its proper divisors (12329023).

875355521 is a wasteful number, since it uses less digits than its factorization.

875355521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12329022.

The product of its digits is 210000, while the sum is 41.

The square root of 875355521 is about 29586.4077069184. The cubic root of 875355521 is about 956.5951142660.

The spelling of 875355521 in words is "eight hundred seventy-five million, three hundred fifty-five thousand, five hundred twenty-one".