81732053 has 8 divisors (see below), whose sum is σ = 92652000. Its totient is φ = 71473968.

The previous prime is 81732047. The next prime is 81732059. The reversal of 81732053 is 35023718.

It is an interprime number because it is at equal distance from previous prime (81732047) and next prime (81732059).

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 81732053 - 2⁴ = 81732037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81732059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165203 + ... + 165696.

It is an arithmetic number, because the mean of its divisors is an integer number (11581500).

Almost surely, 2^81732053 is an apocalyptic number.

It is an amenable number.

81732053 is a deficient number, since it is larger than the sum of its proper divisors (10919947).

81732053 is a wasteful number, since it uses less digits than its factorization.

81732053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330931.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 81732053 is about 9040.5781341682. The cubic root of 81732053 is about 433.9744245797.

The spelling of 81732053 in words is "eighty-one million, seven hundred thirty-two thousand, fifty-three".