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561076421 = 2397251491
BaseRepresentation
bin100001011100010…
…101100011000101
31110002202122011012
4201130111203011
52122113421141
6131401452005
716622033213
oct4134254305
91402678135
10561076421
11268793024
12137aa1005
138c31aca9
1454733cb3
15343ceceb
hex217158c5

561076421 has 8 divisors (see below), whose sum is σ = 591509184. Its totient is φ = 531146880.

The previous prime is 561076387. The next prime is 561076423. The reversal of 561076421 is 124670165.

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 561076421 - 226 = 493967557 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 (561076423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123515 + ... + 127976.

It is an arithmetic number, because the mean of its divisors is an integer number (73938648).

Almost surely, 2561076421 is an apocalyptic number.

It is an amenable number.

561076421 is a deficient number, since it is larger than the sum of its proper divisors (30432763).

561076421 is a wasteful number, since it uses less digits than its factorization.

561076421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251611.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 561076421 is about 23687.0517582919. The cubic root of 561076421 is about 824.7848455163.

The spelling of 561076421 in words is "five hundred sixty-one million, seventy-six thousand, four hundred twenty-one".

Divisors: 1 23 97 2231 251491 5784293 24394627 561076421