1601245 has 8 divisors (see below), whose sum is σ = 1929816. Its totient is φ = 1275456.

The previous prime is 1601239. The next prime is 1601261. The reversal of 1601245 is 5421061.

It can be written as a sum of positive squares in 4 ways, for example, as 1028196 + 573049 = 1014^2 + 757^2 .

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 1601245 - 2⁹ = 1600733 is a prime.

It is a Duffinian number.

1601245 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 919 + ... + 2011.

It is an arithmetic number, because the mean of its divisors is an integer number (241227).

2^1601245 is an apocalyptic number.

It is an amenable number.

1601245 is a deficient number, since it is larger than the sum of its proper divisors (328571).

1601245 is a wasteful number, since it uses less digits than its factorization.

1601245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1601245 is about 1265.4030978309. The cubic root of 1601245 is about 116.9910383474.

The spelling of 1601245 in words is "one million, six hundred one thousand, two hundred forty-five".