95721 has 4 divisors (see below), whose sum is σ = 127632. Its totient is φ = 63812.

The previous prime is 95717. The next prime is 95723. The reversal of 95721 is 12759.

95721 = T₉₄ + T₉₅ + ... + T₁₁₁.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12759 = 3 ⋅4253.

It is a cyclic number.

It is not a de Polignac number, because 95721 - 2² = 95717 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 95691 and 95700.

It is not an unprimeable number, because it can be changed into a prime (95723) 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, 15951 + ... + 15956.

It is an arithmetic number, because the mean of its divisors is an integer number (31908).

2⁹⁵⁷²¹ is an apocalyptic number.

It is an amenable number.

95721 is a deficient number, since it is larger than the sum of its proper divisors (31911).

95721 is a wasteful number, since it uses less digits than its factorization.

95721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31910.

The product of its digits is 630, while the sum is 24.

The square root of 95721 is about 309.3881057830. The cubic root of 95721 is about 45.7441689842.

The spelling of 95721 in words is "ninety-five thousand, seven hundred twenty-one".