2153851 has 4 divisors (see below), whose sum is σ = 2461552. Its totient is φ = 1846152.

The previous prime is 2153839. The next prime is 2153861. The reversal of 2153851 is 1583512.

It is a happy number.

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

It is not a de Polignac number, because 2153851 - 2⁵ = 2153819 is a prime.

It is a pancake number, because a pancake can be divided into 2153851 parts by 2075 straight cuts.

It is a Duffinian number.

2153851 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2153861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153840 + ... + 153853.

It is an arithmetic number, because the mean of its divisors is an integer number (615388).

2^2153851 is an apocalyptic number.

2153851 is a deficient number, since it is larger than the sum of its proper divisors (307701).

2153851 is an equidigital number, since it uses as much as digits as its factorization.

2153851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307700.

The product of its digits is 1200, while the sum is 25.

The square root of 2153851 is about 1467.6004224584. The cubic root of 2153851 is about 129.1433016820.

The spelling of 2153851 in words is "two million, one hundred fifty-three thousand, eight hundred fifty-one".