855427 has 2 divisors, whose sum is σ = 855428. Its totient is φ = 855426.

The previous prime is 855419. The next prime is 855431. The reversal of 855427 is 724558.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 855427 - 2³ = 855419 is a prime.

It is not a weakly prime, because it can be changed into another prime (855467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427713 + 427714.

It is an arithmetic number, because the mean of its divisors is an integer number (427714).

2⁸⁵⁵⁴²⁷ is an apocalyptic number.

855427 is a deficient number, since it is larger than the sum of its proper divisors (1).

855427 is an equidigital number, since it uses as much as digits as its factorization.

855427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11200, while the sum is 31.

The square root of 855427 is about 924.8929667805. The cubic root of 855427 is about 94.9279971493.

It can be divided in two parts, 855 and 427, that multiplied together give a triangular number (365085 = T₈₅₄).

The spelling of 855427 in words is "eight hundred fifty-five thousand, four hundred twenty-seven".