2951 has 4 divisors (see below), whose sum is σ = 3192. Its totient is φ = 2712.

The previous prime is 2939. The next prime is 2953. The reversal of 2951 is 1592.

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 2951 - 2⁶ = 2887 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2953) 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 3 ways as a sum of consecutive naturals, for example, 101 + ... + 126.

It is an arithmetic number, because the mean of its divisors is an integer number (798).

2951 is a deficient number, since it is larger than the sum of its proper divisors (241).

2951 is a wasteful number, since it uses less digits than its factorization.

2951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240.

The product of its digits is 90, while the sum is 17.

The square root of 2951 is about 54.3231074222. The cubic root of 2951 is about 14.3435417932.

The spelling of 2951 in words is "two thousand, nine hundred fifty-one".