82389553 has 2 divisors, whose sum is σ = 82389554. Its totient is φ = 82389552.

The previous prime is 82389539. The next prime is 82389557. The reversal of 82389553 is 35598328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80407089 + 1982464 = 8967^2 + 1408^2 .

It is a cyclic number.

It is not a de Polignac number, because 82389553 - 2⁵ = 82389521 is a prime.

It is not a weakly prime, because it can be changed into another prime (82389557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41194776 + 41194777.

It is an arithmetic number, because the mean of its divisors is an integer number (41194777).

Almost surely, 2^82389553 is an apocalyptic number.

It is an amenable number.

82389553 is a deficient number, since it is larger than the sum of its proper divisors (1).

82389553 is an equidigital number, since it uses as much as digits as its factorization.

82389553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 43.

The square root of 82389553 is about 9076.8691188096. The cubic root of 82389553 is about 435.1350318451.

The spelling of 82389553 in words is "eighty-two million, three hundred eighty-nine thousand, five hundred fifty-three".