854781251 has 2 divisors, whose sum is σ = 854781252. Its totient is φ = 854781250.

The previous prime is 854781211. The next prime is 854781287. The reversal of 854781251 is 152187458.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-854781251 is a prime.

It is a super-2 number, since 2×854781251² = 1461301974122250002, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 854781199 and 854781208.

It is not a weakly prime, because it can be changed into another prime (854781211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427390625 + 427390626.

It is an arithmetic number, because the mean of its divisors is an integer number (427390626).

Almost surely, 2^854781251 is an apocalyptic number.

854781251 is a deficient number, since it is larger than the sum of its proper divisors (1).

854781251 is an equidigital number, since it uses as much as digits as its factorization.

854781251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 89600, while the sum is 41.

The square root of 854781251 is about 29236.6422661700. The cubic root of 854781251 is about 949.0410456290.

It can be divided in two parts, 8547 and 81251, that added together give a palindrome (89798).

The spelling of 854781251 in words is "eight hundred fifty-four million, seven hundred eighty-one thousand, two hundred fifty-one".