83355257 has 2 divisors, whose sum is σ = 83355258. Its totient is φ = 83355256.

The previous prime is 83355253. The next prime is 83355263. The reversal of 83355257 is 75255338.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80478841 + 2876416 = 8971^2 + 1696^2 .

It is a cyclic number.

It is not a de Polignac number, because 83355257 - 2² = 83355253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83355257.

It is not a weakly prime, because it can be changed into another prime (83355253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41677628 + 41677629.

It is an arithmetic number, because the mean of its divisors is an integer number (41677629).

Almost surely, 2^83355257 is an apocalyptic number.

It is an amenable number.

83355257 is a deficient number, since it is larger than the sum of its proper divisors (1).

83355257 is an equidigital number, since it uses as much as digits as its factorization.

83355257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126000, while the sum is 38.

The square root of 83355257 is about 9129.9100214624. The cubic root of 83355257 is about 436.8285331834.

The spelling of 83355257 in words is "eighty-three million, three hundred fifty-five thousand, two hundred fifty-seven".