5550521 has 4 divisors (see below), whose sum is σ = 5791872. Its totient is φ = 5309172.

The previous prime is 5550497. The next prime is 5550529. The reversal of 5550521 is 1250555.

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 a de Polignac number, because none of the positive numbers 2^k-5550521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 241327 = 5550521 / (5 + 5 + 5 + 0 + 5 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5550529) 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, 120641 + ... + 120686.

It is an arithmetic number, because the mean of its divisors is an integer number (1447968).

Almost surely, 2^5550521 is an apocalyptic number.

It is an amenable number.

5550521 is a deficient number, since it is larger than the sum of its proper divisors (241351).

5550521 is a wasteful number, since it uses less digits than its factorization.

5550521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241350.

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 5550521 is about 2355.9543713748. The cubic root of 5550521 is about 177.0562452253.

The spelling of 5550521 in words is "five million, five hundred fifty thousand, five hundred twenty-one".