83381563 has 2 divisors, whose sum is σ = 83381564. Its totient is φ = 83381562.

The previous prime is 83381533. The next prime is 83381579. The reversal of 83381563 is 36518338.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83381563 - 2¹⁷ = 83250491 is a prime.

It is not a weakly prime, because it can be changed into another prime (83381533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41690781 + 41690782.

It is an arithmetic number, because the mean of its divisors is an integer number (41690782).

Almost surely, 2^83381563 is an apocalyptic number.

83381563 is a deficient number, since it is larger than the sum of its proper divisors (1).

83381563 is an equidigital number, since it uses as much as digits as its factorization.

83381563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 83381563 is about 9131.3505572834. The cubic root of 83381563 is about 436.8744811063.

The spelling of 83381563 in words is "eighty-three million, three hundred eighty-one thousand, five hundred sixty-three".