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4869561 = 312712781
BaseRepresentation
bin10010100100110110111001
3100011101210010
4102210312321
52221311221
6252212133
756250654
oct22446671
910141703
104869561
112826634
12176a049
1310165c8
1490a89b
15662c76
hex4a4db9

4869561 has 8 divisors (see below), whose sum is σ = 6544384. Its totient is φ = 3220560.

The previous prime is 4869559. The next prime is 4869563. The reversal of 4869561 is 1659684.

It is an interprime number because it is at equal distance from previous prime (4869559) and next prime (4869563).

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

It is not a de Polignac number, because 4869561 - 21 = 4869559 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4869563) 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, 6010 + ... + 6771.

It is an arithmetic number, because the mean of its divisors is an integer number (818048).

Almost surely, 24869561 is an apocalyptic number.

It is an amenable number.

4869561 is a deficient number, since it is larger than the sum of its proper divisors (1674823).

4869561 is a wasteful number, since it uses less digits than its factorization.

4869561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12911.

The product of its digits is 51840, while the sum is 39.

The square root of 4869561 is about 2206.7081818854. The cubic root of 4869561 is about 169.4974895426.

The spelling of 4869561 in words is "four million, eight hundred sixty-nine thousand, five hundred sixty-one".

Divisors: 1 3 127 381 12781 38343 1623187 4869561