5561407 has 4 divisors (see below), whose sum is σ = 5583816. Its totient is φ = 5539000.

The previous prime is 5561401. The next prime is 5561419. The reversal of 5561407 is 7041655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5561407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5561401) 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, 10828 + ... + 11329.

It is an arithmetic number, because the mean of its divisors is an integer number (1395954).

Almost surely, 2^5561407 is an apocalyptic number.

5561407 is a deficient number, since it is larger than the sum of its proper divisors (22409).

5561407 is a wasteful number, since it uses less digits than its factorization.

5561407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22408.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 5561407 is about 2358.2635560938. The cubic root of 5561407 is about 177.1719205881.

The spelling of 5561407 in words is "five million, five hundred sixty-one thousand, four hundred seven".