5501621 has 4 divisors (see below), whose sum is σ = 5791200. Its totient is φ = 5212044.

The previous prime is 5501609. The next prime is 5501647. The reversal of 5501621 is 1261055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5501621 - 2¹⁰ = 5500597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5501593 and 5501602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5501681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144761 + ... + 144798.

It is an arithmetic number, because the mean of its divisors is an integer number (1447800).

Almost surely, 2^5501621 is an apocalyptic number.

It is an amenable number.

5501621 is a deficient number, since it is larger than the sum of its proper divisors (289579).

5501621 is a wasteful number, since it uses less digits than its factorization.

5501621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289578.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 5501621 is about 2345.5534528124. The cubic root of 5501621 is about 176.5347565619.

Adding to 5501621 its reverse (1261055), we get a palindrome (6762676).

The spelling of 5501621 in words is "five million, five hundred one thousand, six hundred twenty-one".