2153451 has 4 divisors (see below), whose sum is σ = 2871272. Its totient is φ = 1435632.

The previous prime is 2153449. The next prime is 2153471. The reversal of 2153451 is 1543512.

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

It is not a de Polignac number, because 2153451 - 2¹ = 2153449 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2153401) 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, 358906 + ... + 358911.

It is an arithmetic number, because the mean of its divisors is an integer number (717818).

2^2153451 is an apocalyptic number.

2153451 is a deficient number, since it is larger than the sum of its proper divisors (717821).

2153451 is an equidigital number, since it uses as much as digits as its factorization.

2153451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717820.

The product of its digits is 600, while the sum is 21.

The square root of 2153451 is about 1467.4641392552. The cubic root of 2153451 is about 129.1353066196.

Adding to 2153451 its reverse (1543512), we get a palindrome (3696963).

The spelling of 2153451 in words is "two million, one hundred fifty-three thousand, four hundred fifty-one".