2151066 has 16 divisors (see below), whose sum is σ = 4528800. Its totient is φ = 679248.

The previous prime is 2151031. The next prime is 2151073. The reversal of 2151066 is 6601512.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9321 + ... + 9548.

It is an arithmetic number, because the mean of its divisors is an integer number (283050).

2^2151066 is an apocalyptic number.

2151066 is an abundant number, since it is smaller than the sum of its proper divisors (2377734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2151066 is a wasteful number, since it uses less digits than its factorization.

2151066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18893.

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

The square root of 2151066 is about 1466.6512877982. The cubic root of 2151066 is about 129.0876154985.

Adding to 2151066 its reverse (6601512), we get a palindrome (8752578).

The spelling of 2151066 in words is "two million, one hundred fifty-one thousand, sixty-six".