2128151 has 4 divisors (see below), whose sum is σ = 2134632. Its totient is φ = 2121672.

The previous prime is 2128103. The next prime is 2128153. The reversal of 2128151 is 1518212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2128151 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 (2128153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2720 + ... + 3413.

It is an arithmetic number, because the mean of its divisors is an integer number (533658).

2^2128151 is an apocalyptic number.

2128151 is a deficient number, since it is larger than the sum of its proper divisors (6481).

2128151 is an equidigital number, since it uses as much as digits as its factorization.

2128151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6480.

The product of its digits is 160, while the sum is 20.

The square root of 2128151 is about 1458.8183574386. The cubic root of 2128151 is about 128.6275940970.

The spelling of 2128151 in words is "two million, one hundred twenty-eight thousand, one hundred fifty-one".