2154451 has 8 divisors (see below), whose sum is σ = 2344160. Its totient is φ = 1968192.

The previous prime is 2154419. The next prime is 2154487. The reversal of 2154451 is 1544512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2154451 - 2⁵ = 2154419 is a prime.

It is a super-2 number, since 2×2154451² = 9283318222802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154491) 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 7 ways as a sum of consecutive naturals, for example, 535 + ... + 2143.

It is an arithmetic number, because the mean of its divisors is an integer number (293020).

2^2154451 is an apocalyptic number.

2154451 is a deficient number, since it is larger than the sum of its proper divisors (189709).

2154451 is a wasteful number, since it uses less digits than its factorization.

2154451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725.

The product of its digits is 800, while the sum is 22.

The square root of 2154451 is about 1467.8048235375. The cubic root of 2154451 is about 129.1552924196.

Adding to 2154451 its reverse (1544512), we get a palindrome (3698963).

The spelling of 2154451 in words is "two million, one hundred fifty-four thousand, four hundred fifty-one".