77151 has 4 divisors (see below), whose sum is σ = 102872. Its totient is φ = 51432.

The previous prime is 77141. The next prime is 77153. The reversal of 77151 is 15177.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15177 = 3 ⋅5059.

It is not a de Polignac number, because 77151 - 2⁷ = 77023 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77153) 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 3 ways as a sum of consecutive naturals, for example, 12856 + ... + 12861.

It is an arithmetic number, because the mean of its divisors is an integer number (25718).

2⁷⁷¹⁵¹ is an apocalyptic number.

77151 is a deficient number, since it is larger than the sum of its proper divisors (25721).

77151 is a wasteful number, since it uses less digits than its factorization.

77151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25720.

The product of its digits is 245, while the sum is 21.

The square root of 77151 is about 277.7606883632. The cubic root of 77151 is about 42.5710001222.

The spelling of 77151 in words is "seventy-seven thousand, one hundred fifty-one".