985383551 has 2 divisors, whose sum is σ = 985383552. Its totient is φ = 985383550.

The previous prime is 985383533. The next prime is 985383557. The reversal of 985383551 is 155383589.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 985383551 - 2¹⁰ = 985382527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 985383496 and 985383505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985383557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492691775 + 492691776.

It is an arithmetic number, because the mean of its divisors is an integer number (492691776).

Almost surely, 2^985383551 is an apocalyptic number.

985383551 is a deficient number, since it is larger than the sum of its proper divisors (1).

985383551 is an equidigital number, since it uses as much as digits as its factorization.

985383551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648000, while the sum is 47.

The square root of 985383551 is about 31390.8195337427. The cubic root of 985383551 is about 995.1039178351.

The spelling of 985383551 in words is "nine hundred eighty-five million, three hundred eighty-three thousand, five hundred fifty-one".