5505621 has 24 divisors (see below), whose sum is σ = 8363040. Its totient is φ = 3215520.

The previous prime is 5505613. The next prime is 5505641. The reversal of 5505621 is 1265055.

It is not a de Polignac number, because 5505621 - 2³ = 5505613 is a prime.

It is a Curzon number.

5505621 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5505591 and 5505600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5505601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10266 + ... + 10788.

It is an arithmetic number, because the mean of its divisors is an integer number (348460).

Almost surely, 2^5505621 is an apocalyptic number.

It is an amenable number.

5505621 is a deficient number, since it is larger than the sum of its proper divisors (2857419).

5505621 is a wasteful number, since it uses less digits than its factorization.

5505621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 5505621 is about 2346.4059751032. The cubic root of 5505621 is about 176.5775298924.

The spelling of 5505621 in words is "five million, five hundred five thousand, six hundred twenty-one".