2390561 has 8 divisors (see below), whose sum is σ = 2570880. Its totient is φ = 2215728.

The previous prime is 2390543. The next prime is 2390579. The reversal of 2390561 is 1650932.

It is an interprime number because it is at equal distance from previous prime (2390543) and next prime (2390579).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2390561 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2390561.

It is not an unprimeable number, because it can be changed into a prime (2392561) 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, 446 + ... + 2231.

It is an arithmetic number, because the mean of its divisors is an integer number (321360).

2^2390561 is an apocalyptic number.

2390561 is the 893-rd octagonal number.

It is an amenable number.

2390561 is a deficient number, since it is larger than the sum of its proper divisors (180319).

2390561 is a wasteful number, since it uses less digits than its factorization.

2390561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2743.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 2390561 is about 1546.1439130948. The cubic root of 2390561 is about 133.7108378080.

The spelling of 2390561 in words is "two million, three hundred ninety thousand, five hundred sixty-one".