4289561 has 4 divisors (see below), whose sum is σ = 4318500. Its totient is φ = 4260624.

The previous prime is 4289539. The next prime is 4289599. The reversal of 4289561 is 1659824.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2131600 + 2157961 = 1460^2 + 1469^2 .

It is a cyclic number.

It is not a de Polignac number, because 4289561 - 2²² = 95257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4289531) 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, 14246 + ... + 14543.

It is an arithmetic number, because the mean of its divisors is an integer number (1079625).

Almost surely, 2^4289561 is an apocalyptic number.

It is an amenable number.

4289561 is a deficient number, since it is larger than the sum of its proper divisors (28939).

4289561 is a wasteful number, since it uses less digits than its factorization.

4289561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28938.

The product of its digits is 17280, while the sum is 35.

The square root of 4289561 is about 2071.1255394109. The cubic root of 4289561 is about 162.4816357946.

The spelling of 4289561 in words is "four million, two hundred eighty-nine thousand, five hundred sixty-one".