213055555 has 16 divisors (see below), whose sum is σ = 268349760. Its totient is φ = 162076288.

The previous prime is 213055541. The next prime is 213055589. The reversal of 213055555 is 555550312.

It is a happy number.

213055555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 213055555 - 2²¹ = 210958403 is a prime.

213055555 is a modest number, since divided by 55555 gives 2130 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14541 + ... + 25249.

It is an arithmetic number, because the mean of its divisors is an integer number (16771860).

Almost surely, 2^213055555 is an apocalyptic number.

213055555 is a deficient number, since it is larger than the sum of its proper divisors (55294205).

213055555 is a wasteful number, since it uses less digits than its factorization.

213055555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10910.

The product of its (nonzero) digits is 18750, while the sum is 31.

The square root of 213055555 is about 14596.4226781770. The cubic root of 213055555 is about 597.2611791602.

The spelling of 213055555 in words is "two hundred thirteen million, fifty-five thousand, five hundred fifty-five".