2150971 has 4 divisors (see below), whose sum is σ = 2264200. Its totient is φ = 2037744.

The previous prime is 2150969. The next prime is 2150977. The reversal of 2150971 is 1790512.

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

It is a cyclic number.

It is not a de Polignac number, because 2150971 - 2¹ = 2150969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2150977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56586 + ... + 56623.

It is an arithmetic number, because the mean of its divisors is an integer number (566050).

2^2150971 is an apocalyptic number.

2150971 is a deficient number, since it is larger than the sum of its proper divisors (113229).

2150971 is a wasteful number, since it uses less digits than its factorization.

2150971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113228.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 2150971 is about 1466.6189007373. The cubic root of 2150971 is about 129.0857151223.

The spelling of 2150971 in words is "two million, one hundred fifty thousand, nine hundred seventy-one".