83551393 has 2 divisors, whose sum is σ = 83551394. Its totient is φ = 83551392.

The previous prime is 83551381. The next prime is 83551423. The reversal of 83551393 is 39315538.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70677649 + 12873744 = 8407^2 + 3588^2 .

It is a cyclic number.

It is not a de Polignac number, because 83551393 - 2⁵ = 83551361 is a prime.

It is not a weakly prime, because it can be changed into another prime (83551313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41775696 + 41775697.

It is an arithmetic number, because the mean of its divisors is an integer number (41775697).

Almost surely, 2^83551393 is an apocalyptic number.

It is an amenable number.

83551393 is a deficient number, since it is larger than the sum of its proper divisors (1).

83551393 is an equidigital number, since it uses as much as digits as its factorization.

83551393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 37.

The square root of 83551393 is about 9140.6451085249. The cubic root of 83551393 is about 437.1708858702.

The spelling of 83551393 in words is "eighty-three million, five hundred fifty-one thousand, three hundred ninety-three".