561417421 has 8 divisors (see below), whose sum is σ = 565703424. Its totient is φ = 557148240.

The previous prime is 561417379. The next prime is 561417443. The reversal of 561417421 is 124714165.

561417421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 561417421 - 2¹⁹ = 560893133 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 (561417721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67335 + ... + 75211.

It is an arithmetic number, because the mean of its divisors is an integer number (70712928).

Almost surely, 2^561417421 is an apocalyptic number.

It is an amenable number.

561417421 is a deficient number, since it is larger than the sum of its proper divisors (4286003).

561417421 is a wasteful number, since it uses less digits than its factorization.

561417421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8411.

The product of its digits is 6720, while the sum is 31.

The square root of 561417421 is about 23694.2486903468. The cubic root of 561417421 is about 824.9519021852.

The spelling of 561417421 in words is "five hundred sixty-one million, four hundred seventeen thousand, four hundred twenty-one".