4287561 has 4 divisors (see below), whose sum is σ = 5716752. Its totient is φ = 2858372.

The previous prime is 4287557. The next prime is 4287583. The reversal of 4287561 is 1657824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4287561 - 2² = 4287557 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (4287511) 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, 714591 + ... + 714596.

It is an arithmetic number, because the mean of its divisors is an integer number (1429188).

Almost surely, 2^4287561 is an apocalyptic number.

It is an amenable number.

4287561 is a deficient number, since it is larger than the sum of its proper divisors (1429191).

4287561 is a wasteful number, since it uses less digits than its factorization.

4287561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429190.

The product of its digits is 13440, while the sum is 33.

The square root of 4287561 is about 2070.6426538638. The cubic root of 4287561 is about 162.4563796134.

The spelling of 4287561 in words is "four million, two hundred eighty-seven thousand, five hundred sixty-one".