1667051 has 2 divisors, whose sum is σ = 1667052. Its totient is φ = 1667050.

The previous prime is 1667047. The next prime is 1667053. The reversal of 1667051 is 1507661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1667051 - 2² = 1667047 is a prime.

Together with 1667053, it forms a pair of twin primes.

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 1667051.

It is not a weakly prime, because it can be changed into another prime (1667053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 833525 + 833526.

It is an arithmetic number, because the mean of its divisors is an integer number (833526).

2^1667051 is an apocalyptic number.

1667051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1667051 is an equidigital number, since it uses as much as digits as its factorization.

1667051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 1667051 is about 1291.1432918154. The cubic root of 1667051 is about 118.5722230003.

The spelling of 1667051 in words is "one million, six hundred sixty-seven thousand, fifty-one".