855172363 has 2 divisors, whose sum is σ = 855172364. Its totient is φ = 855172362.

The previous prime is 855172337. The next prime is 855172391. The reversal of 855172363 is 363271558.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-855172363 is a prime.

It is not a weakly prime, because it can be changed into another prime (855172163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427586181 + 427586182.

It is an arithmetic number, because the mean of its divisors is an integer number (427586182).

Almost surely, 2^855172363 is an apocalyptic number.

855172363 is a deficient number, since it is larger than the sum of its proper divisors (1).

855172363 is an equidigital number, since it uses as much as digits as its factorization.

855172363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 40.

The square root of 855172363 is about 29243.3302310117. The cubic root of 855172363 is about 949.1857706656.

The spelling of 855172363 in words is "eight hundred fifty-five million, one hundred seventy-two thousand, three hundred sixty-three".