2151199 has 12 divisors (see below), whose sum is σ = 2331720. Its totient is φ = 1983600.

The previous prime is 2151179. The next prime is 2151203. The reversal of 2151199 is 9911512.

2151199 = 93² + 94² + ... + 193².

2151199 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 2151199 - 2¹¹ = 2149151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151119) 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, 21249 + ... + 21349.

It is an arithmetic number, because the mean of its divisors is an integer number (194310).

2^2151199 is an apocalyptic number.

2151199 is a deficient number, since it is larger than the sum of its proper divisors (180521).

2151199 is a wasteful number, since it uses less digits than its factorization.

2151199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 179 counting only the distinct ones).

The product of its digits is 810, while the sum is 28.

The square root of 2151199 is about 1466.6966284818. The cubic root of 2151199 is about 129.0902759312.

The spelling of 2151199 in words is "two million, one hundred fifty-one thousand, one hundred ninety-nine".