5561421 has 4 divisors (see below), whose sum is σ = 7415232. Its totient is φ = 3707612.

The previous prime is 5561419. The next prime is 5561429. The reversal of 5561421 is 1241655.

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 5561421 - 2¹ = 5561419 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 5561391 and 5561400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5561429) 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, 926901 + ... + 926906.

It is an arithmetic number, because the mean of its divisors is an integer number (1853808).

Almost surely, 2^5561421 is an apocalyptic number.

It is an amenable number.

5561421 is a deficient number, since it is larger than the sum of its proper divisors (1853811).

5561421 is a wasteful number, since it uses less digits than its factorization.

5561421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853810.

The product of its digits is 1200, while the sum is 24.

The square root of 5561421 is about 2358.2665243776. The cubic root of 5561421 is about 177.1720692558.

The spelling of 5561421 in words is "five million, five hundred sixty-one thousand, four hundred twenty-one".