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951 = 3317

951 has 4 divisors (see below), whose sum is σ = 1272. Its totient is φ = 632.

The previous prime is 947. The next prime is 953. The reversal of 951 is 159.

951 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 159 = 353.

It is a cyclic number.

It is not a de Polignac number, because 951 - 22 = 947 is a prime.

It is a D-number.

It is a straight-line number, since its digits are in arithmetic progression.

It is a plaindrome in base 8, base 9 and base 14.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (953) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156 + ... + 161.

It is an arithmetic number, because the mean of its divisors is an integer number (318).

951 is the 20-th centered pentagonal number.

951 is a deficient number, since it is larger than the sum of its proper divisors (321).

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

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

The sum of its prime factors is 320.

The product of its digits is 45, while the sum is 15.

The square root of 951 is about 30.8382878902. The cubic root of 951 is about 9.8339238051.

The spelling of 951 in words is "nine hundred fifty-one", and thus it is an aban number.

Divisors: 1 3 317 951