521404095 has 16 divisors (see below), whose sum is σ = 835528320. Its totient is φ = 277654944.

The previous prime is 521404069. The next prime is 521404129. The reversal of 521404095 is 590404125.

It is not a de Polignac number, because 521404095 - 2⁶ = 521404031 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16489 + ... + 36258.

It is an arithmetic number, because the mean of its divisors is an integer number (52220520).

Almost surely, 2^521404095 is an apocalyptic number.

521404095 is a deficient number, since it is larger than the sum of its proper divisors (314124225).

521404095 is a wasteful number, since it uses less digits than its factorization.

521404095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53414.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 521404095 is about 22834.2745669750. The cubic root of 521404095 is about 804.8682808545.

Adding to 521404095 its sum of digits (30), we get a palindrome (521404125).

The spelling of 521404095 in words is "five hundred twenty-one million, four hundred four thousand, ninety-five".