521004411 has 12 divisors (see below), whose sum is σ = 753373920. Its totient is φ = 346961520.

The previous prime is 521004409. The next prime is 521004433. The reversal of 521004411 is 114400125.

It is not a de Polignac number, because 521004411 - 2¹ = 521004409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (521004611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22291 + ... + 39228.

It is an arithmetic number, because the mean of its divisors is an integer number (62781160).

Almost surely, 2^521004411 is an apocalyptic number.

521004411 is a deficient number, since it is larger than the sum of its proper divisors (232369509).

521004411 is a wasteful number, since it uses less digits than its factorization.

521004411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62466 (or 62463 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 521004411 is about 22825.5210455315. The cubic root of 521004411 is about 804.6625701525.

Adding to 521004411 its reverse (114400125), we get a palindrome (635404536).

The spelling of 521004411 in words is "five hundred twenty-one million, four thousand, four hundred eleven".