1656201 has 8 divisors (see below), whose sum is σ = 2233440. Its totient is φ = 1091552.

The previous prime is 1656199. The next prime is 1656203. The reversal of 1656201 is 1026561.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1656199) and next prime (1656203).

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 1656201 - 2¹ = 1656199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1656203) 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, 2835 + ... + 3368.

It is an arithmetic number, because the mean of its divisors is an integer number (279180).

2^1656201 is an apocalyptic number.

It is an amenable number.

1656201 is a deficient number, since it is larger than the sum of its proper divisors (577239).

1656201 is an equidigital number, since it uses as much as digits as its factorization.

1656201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6295.

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

The square root of 1656201 is about 1286.9347302797. The cubic root of 1656201 is about 118.3144204824.

Adding to 1656201 its product of nonzero digits (360), we get a palindrome (1656561).

It can be divided in two parts, 165 and 6201, that multiplied together give a triangular number (1023165 = T₁₄₃₀).

The spelling of 1656201 in words is "one million, six hundred fifty-six thousand, two hundred one".