2145451 has 24 divisors (see below), whose sum is σ = 2872800. Its totient is φ = 1562880.

The previous prime is 2145443. The next prime is 2145469. The reversal of 2145451 is 1545412.

2145451 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 2145451 - 2³ = 2145443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145401) 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 23 ways as a sum of consecutive naturals, for example, 14325 + ... + 14473.

It is an arithmetic number, because the mean of its divisors is an integer number (119700).

2^2145451 is an apocalyptic number.

2145451 is a deficient number, since it is larger than the sum of its proper divisors (727349).

2145451 is a wasteful number, since it uses less digits than its factorization.

2145451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 184 counting only the distinct ones).

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

The square root of 2145451 is about 1464.7358123566. The cubic root of 2145451 is about 128.9751970422.

It can be divided in two parts, 214 and 5451, that added together give a palindrome (5665).

The spelling of 2145451 in words is "two million, one hundred forty-five thousand, four hundred fifty-one".