78951 has 4 divisors (see below), whose sum is σ = 105272. Its totient is φ = 52632.

The previous prime is 78941. The next prime is 78977. The reversal of 78951 is 15987.

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

It is not a de Polignac number, because 78951 - 2⁵ = 78919 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78901) 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, 13156 + ... + 13161.

It is an arithmetic number, because the mean of its divisors is an integer number (26318).

2⁷⁸⁹⁵¹ is an apocalyptic number.

78951 is a deficient number, since it is larger than the sum of its proper divisors (26321).

78951 is a wasteful number, since it uses less digits than its factorization.

78951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26320.

The product of its digits is 2520, while the sum is 30.

The square root of 78951 is about 280.9822058423. The cubic root of 78951 is about 42.8995310776.

The spelling of 78951 in words is "seventy-eight thousand, nine hundred fifty-one".