81450283 has 8 divisors (see below), whose sum is σ = 88055120. Its totient is φ = 75077280.

The previous prime is 81450233. The next prime is 81450353. The reversal of 81450283 is 38205418.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81450283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81450233) 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, 57228 + ... + 58633.

It is an arithmetic number, because the mean of its divisors is an integer number (11006890).

Almost surely, 2^81450283 is an apocalyptic number.

81450283 is a deficient number, since it is larger than the sum of its proper divisors (6604837).

81450283 is a wasteful number, since it uses less digits than its factorization.

81450283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115917.

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

The square root of 81450283 is about 9024.9810526117. The cubic root of 81450283 is about 433.4751436592.

The spelling of 81450283 in words is "eighty-one million, four hundred fifty thousand, two hundred eighty-three".