213051155 has 8 divisors (see below), whose sum is σ = 256254432. Its totient is φ = 170045568.

The previous prime is 213051119. The next prime is 213051169. The reversal of 213051155 is 551150312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213051155 - 2²⁰ = 212002579 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213051155.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47039 + ... + 51368.

It is an arithmetic number, because the mean of its divisors is an integer number (32031804).

Almost surely, 2^213051155 is an apocalyptic number.

213051155 is a deficient number, since it is larger than the sum of its proper divisors (43203277).

213051155 is an equidigital number, since it uses as much as digits as its factorization.

213051155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98845.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 213051155 is about 14596.2719555371. The cubic root of 213051155 is about 597.2570676077.

The spelling of 213051155 in words is "two hundred thirteen million, fifty-one thousand, one hundred fifty-five".