81595483 has 4 divisors (see below), whose sum is σ = 81853200. Its totient is φ = 81337768.

The previous prime is 81595463. The next prime is 81595489. The reversal of 81595483 is 38459518.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38459518 = 2 ⋅19229759.

It is a cyclic number.

It is not a de Polignac number, because 81595483 - 2¹³ = 81587291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81595489) 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, 128383 + ... + 129016.

It is an arithmetic number, because the mean of its divisors is an integer number (20463300).

Almost surely, 2^81595483 is an apocalyptic number.

81595483 is a deficient number, since it is larger than the sum of its proper divisors (257717).

81595483 is a wasteful number, since it uses less digits than its factorization.

81595483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257716.

The product of its digits is 172800, while the sum is 43.

The square root of 81595483 is about 9033.0218088965. The cubic root of 81595483 is about 433.7325736091.

The spelling of 81595483 in words is "eighty-one million, five hundred ninety-five thousand, four hundred eighty-three".