81145462 has 8 divisors (see below), whose sum is σ = 121791600. Its totient is φ = 40548264.

The previous prime is 81145459. The next prime is 81145481. The reversal of 81145462 is 26454118.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7762 + ... + 14917.

It is an arithmetic number, because the mean of its divisors is an integer number (15223950).

Almost surely, 2^81145462 is an apocalyptic number.

81145462 is a deficient number, since it is larger than the sum of its proper divisors (40646138).

81145462 is a wasteful number, since it uses less digits than its factorization.

81145462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24470.

The product of its digits is 7680, while the sum is 31.

The square root of 81145462 is about 9008.0775973567. The cubic root of 81145462 is about 432.9337193002.

The spelling of 81145462 in words is "eighty-one million, one hundred forty-five thousand, four hundred sixty-two".