95821781 has 4 divisors (see below), whose sum is σ = 104532864. Its totient is φ = 87110700.

The previous prime is 95821763. The next prime is 95821783. The reversal of 95821781 is 18712859.

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.

It is a cyclic number.

It is not a de Polignac number, because 95821781 - 2¹⁸ = 95559637 is a prime.

It is a super-2 number, since 2×95821781² = 18363627428023922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (95821783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4355525 + ... + 4355546.

It is an arithmetic number, because the mean of its divisors is an integer number (26133216).

Almost surely, 2^95821781 is an apocalyptic number.

It is an amenable number.

95821781 is a deficient number, since it is larger than the sum of its proper divisors (8711083).

95821781 is a wasteful number, since it uses less digits than its factorization.

95821781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8711082.

The product of its digits is 40320, while the sum is 41.

The square root of 95821781 is about 9788.8600459911. The cubic root of 95821781 is about 457.6021745179.

The spelling of 95821781 in words is "ninety-five million, eight hundred twenty-one thousand, seven hundred eighty-one".