95281721 has 4 divisors (see below), whose sum is σ = 95306100. Its totient is φ = 95257344.

The previous prime is 95281699. The next prime is 95281723. The reversal of 95281721 is 12718259.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12718259 = 1627 ⋅7817.

It can be written as a sum of positive squares in 2 ways, for example, as 26988025 + 68293696 = 5195^2 + 8264^2 .

It is a cyclic number.

It is not a de Polignac number, because 95281721 - 2¹⁸ = 95019577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (95281723) 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, 4856 + ... + 14633.

It is an arithmetic number, because the mean of its divisors is an integer number (23826525).

Almost surely, 2^95281721 is an apocalyptic number.

It is an amenable number.

95281721 is a deficient number, since it is larger than the sum of its proper divisors (24379).

95281721 is a wasteful number, since it uses less digits than its factorization.

95281721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24378.

The product of its digits is 10080, while the sum is 35.

The square root of 95281721 is about 9761.2356287511. The cubic root of 95281721 is about 456.7408589446.

The spelling of 95281721 in words is "ninety-five million, two hundred eighty-one thousand, seven hundred twenty-one".