215426055 has 16 divisors (see below), whose sum is σ = 371196000. Its totient is φ = 106055808.

The previous prime is 215426053. The next prime is 215426059. The reversal of 215426055 is 550624512.

It is not a de Polignac number, because 215426055 - 2¹ = 215426053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215426053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 552180 + ... + 552569.

It is an arithmetic number, because the mean of its divisors is an integer number (23199750).

Almost surely, 2^215426055 is an apocalyptic number.

215426055 is a deficient number, since it is larger than the sum of its proper divisors (155769945).

215426055 is a wasteful number, since it uses less digits than its factorization.

215426055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104770.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 215426055 is about 14677.3994631202. The cubic root of 215426055 is about 599.4680980510.

The spelling of 215426055 in words is "two hundred fifteen million, four hundred twenty-six thousand, fifty-five".