983397551 has 2 divisors, whose sum is σ = 983397552. Its totient is φ = 983397550.

The previous prime is 983397533. The next prime is 983397553. The reversal of 983397551 is 155793389.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-983397551 is a prime.

Together with 983397553, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 983397551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (983397553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491698775 + 491698776.

It is an arithmetic number, because the mean of its divisors is an integer number (491698776).

Almost surely, 2^983397551 is an apocalyptic number.

983397551 is a deficient number, since it is larger than the sum of its proper divisors (1).

983397551 is an equidigital number, since it uses as much as digits as its factorization.

983397551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1020600, while the sum is 50.

The square root of 983397551 is about 31359.1701261369. The cubic root of 983397551 is about 994.4349378666.

The spelling of 983397551 in words is "nine hundred eighty-three million, three hundred ninety-seven thousand, five hundred fifty-one".