2151441 has 10 divisors (see below), whose sum is σ = 3214002. Its totient is φ = 1434240.

The previous prime is 2151433. The next prime is 2151451. The reversal of 2151441 is 1441512.

It can be written as a sum of positive squares in only one way, i.e., 2073600 + 77841 = 1440^2 + 279^2 .

It is not a de Polignac number, because 2151441 - 2³ = 2151433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2151421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 13200 + ... + 13361.

2^2151441 is an apocalyptic number.

It is an amenable number.

2151441 is a deficient number, since it is larger than the sum of its proper divisors (1062561).

2151441 is an equidigital number, since it uses as much as digits as its factorization.

2151441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26573 (or 26564 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 2151441 is about 1466.7791244765. The cubic root of 2151441 is about 129.0951164373.

Adding to 2151441 its reverse (1441512), we get a palindrome (3592953).

The spelling of 2151441 in words is "two million, one hundred fifty-one thousand, four hundred forty-one".