1662051 has 4 divisors (see below), whose sum is σ = 2216072. Its totient is φ = 1108032.

The previous prime is 1662041. The next prime is 1662083. The reversal of 1662051 is 1502661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1502661 = 3 ⋅500887.

It is not a de Polignac number, because 1662051 - 2¹⁴ = 1645667 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1662041) 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 in 3 ways as a sum of consecutive naturals, for example, 277006 + ... + 277011.

It is an arithmetic number, because the mean of its divisors is an integer number (554018).

2^1662051 is an apocalyptic number.

1662051 is a deficient number, since it is larger than the sum of its proper divisors (554021).

1662051 is an equidigital number, since it uses as much as digits as its factorization.

1662051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554020.

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

The square root of 1662051 is about 1289.2055693333. The cubic root of 1662051 is about 118.4535593983.

The spelling of 1662051 in words is "one million, six hundred sixty-two thousand, fifty-one".