83527813 has 2 divisors, whose sum is σ = 83527814. Its totient is φ = 83527812.

The previous prime is 83527811. The next prime is 83527831. The reversal of 83527813 is 31872538.

83527813 = 6462² + 6463².

Together with next prime (83527831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41770369 + 41757444 = 6463^2 + 6462^2 .

It is a cyclic number.

It is not a de Polignac number, because 83527813 - 2¹ = 83527811 is a prime.

Together with 83527811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83527811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41763906 + 41763907.

It is an arithmetic number, because the mean of its divisors is an integer number (41763907).

Almost surely, 2^83527813 is an apocalyptic number.

83527813 is the 6463-rd centered square number.

It is an amenable number.

83527813 is a deficient number, since it is larger than the sum of its proper divisors (1).

83527813 is an equidigital number, since it uses as much as digits as its factorization.

83527813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 37.

The square root of 83527813 is about 9139.3551741904. The cubic root of 83527813 is about 437.1297556586.

The spelling of 83527813 in words is "eighty-three million, five hundred twenty-seven thousand, eight hundred thirteen".