1602561 has 8 divisors (see below), whose sum is σ = 2177280. Its totient is φ = 1048112.

The previous prime is 1602553. The next prime is 1602589. The reversal of 1602561 is 1652061.

It is a happy number.

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 1602561 - 2³ = 1602553 is a prime.

1602561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1602551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4881 + ... + 5198.

It is an arithmetic number, because the mean of its divisors is an integer number (272160).

2^1602561 is an apocalyptic number.

It is an amenable number.

1602561 is a deficient number, since it is larger than the sum of its proper divisors (574719).

1602561 is a wasteful number, since it uses less digits than its factorization.

1602561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10135.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1602561 is about 1265.9229834394. The cubic root of 1602561 is about 117.0230796752.

The spelling of 1602561 in words is "one million, six hundred two thousand, five hundred sixty-one".