5521305421 has 16 divisors (see below), whose sum is σ = 5622933888. Its totient is φ = 5420851200.

The previous prime is 5521305341. The next prime is 5521305469. The reversal of 5521305421 is 1245031255.

It is a cyclic number.

It is not a de Polignac number, because 5521305421 - 2²⁹ = 4984434509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5521305421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5521305121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8613261 + ... + 8613901.

It is an arithmetic number, because the mean of its divisors is an integer number (351433368).

Almost surely, 2^5521305421 is an apocalyptic number.

It is an amenable number.

5521305421 is a deficient number, since it is larger than the sum of its proper divisors (101628467).

5521305421 is a wasteful number, since it uses less digits than its factorization.

5521305421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 5521305421 is about 74305.4871526996. The cubic root of 5521305421 is about 1767.4504902350.

Adding to 5521305421 its reverse (1245031255), we get a palindrome (6766336676).

The spelling of 5521305421 in words is "five billion, five hundred twenty-one million, three hundred five thousand, four hundred twenty-one".