853494251 has 2 divisors, whose sum is σ = 853494252. Its totient is φ = 853494250.

The previous prime is 853494241. The next prime is 853494277. The reversal of 853494251 is 152494358.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-853494251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 853494199 and 853494208.

It is not a weakly prime, because it can be changed into another prime (853494211) 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, 426747125 + 426747126.

It is an arithmetic number, because the mean of its divisors is an integer number (426747126).

Almost surely, 2^853494251 is an apocalyptic number.

853494251 is a deficient number, since it is larger than the sum of its proper divisors (1).

853494251 is an equidigital number, since it uses as much as digits as its factorization.

853494251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 41.

The square root of 853494251 is about 29214.6239236448. The cubic root of 853494251 is about 948.5644990095.

The spelling of 853494251 in words is "eight hundred fifty-three million, four hundred ninety-four thousand, two hundred fifty-one".