2151147 has 8 divisors (see below), whose sum is σ = 2938320. Its totient is φ = 1399040.

The previous prime is 2151139. The next prime is 2151157. The reversal of 2151147 is 7411512.

It is a happy number.

2151147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2151147 - 2³ = 2151139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2151137) 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 7 ways as a sum of consecutive naturals, for example, 8622 + ... + 8867.

It is an arithmetic number, because the mean of its divisors is an integer number (367290).

2^2151147 is an apocalyptic number.

2151147 is a deficient number, since it is larger than the sum of its proper divisors (787173).

2151147 is a wasteful number, since it uses less digits than its factorization.

2151147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17533.

The product of its digits is 280, while the sum is 21.

The square root of 2151147 is about 1466.6789014641. The cubic root of 2151147 is about 129.0892357751.

Adding to 2151147 its reverse (7411512), we get a palindrome (9562659).

The spelling of 2151147 in words is "two million, one hundred fifty-one thousand, one hundred forty-seven".