1659101 has 2 divisors, whose sum is σ = 1659102. Its totient is φ = 1659100.

The previous prime is 1659083. The next prime is 1659103. The reversal of 1659101 is 1019561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1503076 + 156025 = 1226^2 + 395^2 .

It is a cyclic number.

It is not a de Polignac number, because 1659101 - 2¹⁴ = 1642717 is a prime.

It is a super-2 number, since 2×1659101² = 5505232256402, which contains 22 as substring.

Together with 1659103, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₁₂₅₂₇₆ and since 1659101 and 125276 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1659103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 829550 + 829551.

It is an arithmetic number, because the mean of its divisors is an integer number (829551).

2^1659101 is an apocalyptic number.

It is an amenable number.

1659101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1659101 is an equidigital number, since it uses as much as digits as its factorization.

1659101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 1659101 is about 1288.0609457630. The cubic root of 1659101 is about 118.3834362101.

The spelling of 1659101 in words is "one million, six hundred fifty-nine thousand, one hundred one".