2151099 has 12 divisors (see below), whose sum is σ = 3119896. Its totient is φ = 1428192.

The previous prime is 2151089. The next prime is 2151101. The reversal of 2151099 is 9901512.

It is a happy number.

2151099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2151099 - 2¹⁵ = 2118331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151089) 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 11 ways as a sum of consecutive naturals, for example, 3852 + ... + 4374.

2^2151099 is an apocalyptic number.

2151099 is a deficient number, since it is larger than the sum of its proper divisors (968797).

2151099 is a wasteful number, since it uses less digits than its factorization.

2151099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986 (or 983 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 2151099 is about 1466.6625378730. The cubic root of 2151099 is about 129.0882756161.

It can be divided in two parts, 21510 and 99, that added together give a square (21609 = 147²).

The spelling of 2151099 in words is "two million, one hundred fifty-one thousand, ninety-nine".