5405521 has 8 divisors (see below), whose sum is σ = 5997600. Its totient is φ = 4830240.

The previous prime is 5405509. The next prime is 5405527. The reversal of 5405521 is 1255045.

5405521 = 696² + 697² + ... + 706².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5405521 - 2⁹ = 5405009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5405492 and 5405501.

It is not an unprimeable number, because it can be changed into a prime (5405527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3516 + ... + 4813.

It is an arithmetic number, because the mean of its divisors is an integer number (749700).

Almost surely, 2^5405521 is an apocalyptic number.

It is an amenable number.

5405521 is a deficient number, since it is larger than the sum of its proper divisors (592079).

5405521 is a wasteful number, since it uses less digits than its factorization.

5405521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8399.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 5405521 is about 2324.9776343010. The cubic root of 5405521 is about 175.5008346754.

The spelling of 5405521 in words is "five million, four hundred five thousand, five hundred twenty-one".