81460535 has 24 divisors (see below), whose sum is σ = 106725600. Its totient is φ = 59659392.

The previous prime is 81460517. The next prime is 81460571. The reversal of 81460535 is 53506418.

It is a happy number.

It is not a de Polignac number, because 81460535 - 2⁶ = 81460471 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125582 + ... + 126228.

It is an arithmetic number, because the mean of its divisors is an integer number (4446900).

Almost surely, 2^81460535 is an apocalyptic number.

81460535 is a deficient number, since it is larger than the sum of its proper divisors (25265065).

81460535 is a wasteful number, since it uses less digits than its factorization.

81460535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827 (or 814 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 81460535 is about 9025.5490137720. The cubic root of 81460535 is about 433.4933298073.

The spelling of 81460535 in words is "eighty-one million, four hundred sixty thousand, five hundred thirty-five".