81495003 has 16 divisors (see below), whose sum is σ = 116153856. Its totient is φ = 50698560.

The previous prime is 81494993. The next prime is 81495013. The reversal of 81495003 is 30059418.

It is an interprime number because it is at equal distance from previous prime (81494993) and next prime (81495013).

It is not a de Polignac number, because 81495003 - 2⁸ = 81494747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81495013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11575 + ... + 17232.

It is an arithmetic number, because the mean of its divisors is an integer number (7259616).

Almost surely, 2^81495003 is an apocalyptic number.

81495003 is a deficient number, since it is larger than the sum of its proper divisors (34658853).

81495003 is a wasteful number, since it uses less digits than its factorization.

81495003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28874.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 81495003 is about 9027.4582801584. The cubic root of 81495003 is about 433.5544618274.

The spelling of 81495003 in words is "eighty-one million, four hundred ninety-five thousand, three".