81497035 has 8 divisors (see below), whose sum is σ = 97952400. Its totient is φ = 65093664.

The previous prime is 81497029. The next prime is 81497041. The reversal of 81497035 is 53079418.

It is an interprime number because it is at equal distance from previous prime (81497029) and next prime (81497041).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81497035 - 2¹³ = 81488843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 81496985 and 81497003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9460 + ... + 15889.

It is an arithmetic number, because the mean of its divisors is an integer number (12244050).

Almost surely, 2^81497035 is an apocalyptic number.

81497035 is a deficient number, since it is larger than the sum of its proper divisors (16455365).

81497035 is a wasteful number, since it uses less digits than its factorization.

81497035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25997.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 81497035 is about 9027.5708249783. The cubic root of 81497035 is about 433.5580652195.

The spelling of 81497035 in words is "eighty-one million, four hundred ninety-seven thousand, thirty-five".