81083001 has 4 divisors (see below), whose sum is σ = 108110672. Its totient is φ = 54055332.

The previous prime is 81082999. The next prime is 81083003. The reversal of 81083001 is 10038018.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (81082999) and next prime (81083003).

It is not a de Polignac number, because 81083001 - 2¹ = 81082999 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (81083003) 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, 13513831 + ... + 13513836.

It is an arithmetic number, because the mean of its divisors is an integer number (27027668).

Almost surely, 2^81083001 is an apocalyptic number.

It is an amenable number.

81083001 is a deficient number, since it is larger than the sum of its proper divisors (27027671).

81083001 is a wasteful number, since it uses less digits than its factorization.

81083001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27027670.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 81083001 is about 9004.6099860016. The cubic root of 81083001 is about 432.8226084890.

The spelling of 81083001 in words is "eighty-one million, eighty-three thousand, one".