1616201 has 2 divisors, whose sum is σ = 1616202. Its totient is φ = 1616200.

The previous prime is 1616183. The next prime is 1616221. The reversal of 1616201 is 1026161.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1092025 + 524176 = 1045^2 + 724^2 .

It is a cyclic number.

It is not a de Polignac number, because 1616201 - 2¹⁰ = 1615177 is a prime.

It is a super-2 number, since 2×1616201² = 5224211344802, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1616201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1616221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808100 + 808101.

It is an arithmetic number, because the mean of its divisors is an integer number (808101).

2^1616201 is an apocalyptic number.

It is an amenable number.

1616201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616201 is an equidigital number, since it uses as much as digits as its factorization.

1616201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1616201 is about 1271.2989420274. The cubic root of 1616201 is about 117.3541513150.

The spelling of 1616201 in words is "one million, six hundred sixteen thousand, two hundred one".