854522981 has 6 divisors (see below), whose sum is σ = 925312050. Its totient is φ = 788790288.

The previous prime is 854522957. The next prime is 854522987. The reversal of 854522981 is 189225458.

It can be written as a sum of positive squares in 3 ways, for example, as 4800481 + 849722500 = 2191^2 + 29150^2 .

It is a de Polignac number, because none of the positive numbers 2^k-854522981 is a prime.

It is a super-2 number, since 2×854522981² = 1460419050114252722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854522987) 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 in 5 ways as a sum of consecutive naturals, for example, 2528006 + ... + 2528343.

It is an arithmetic number, because the mean of its divisors is an integer number (154218675).

Almost surely, 2^854522981 is an apocalyptic number.

It is an amenable number.

854522981 is a deficient number, since it is larger than the sum of its proper divisors (70789069).

854522981 is a wasteful number, since it uses less digits than its factorization.

854522981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5056375 (or 5056362 counting only the distinct ones).

The product of its digits is 230400, while the sum is 44.

The square root of 854522981 is about 29232.2250436056. The cubic root of 854522981 is about 948.9454525475.

The spelling of 854522981 in words is "eight hundred fifty-four million, five hundred twenty-two thousand, nine hundred eighty-one".