215054143 has 4 divisors (see below), whose sum is σ = 220299408. Its totient is φ = 209808880.

The previous prime is 215054087. The next prime is 215054153. The reversal of 215054143 is 341450512.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215054143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215054153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2622571 + ... + 2622652.

It is an arithmetic number, because the mean of its divisors is an integer number (55074852).

Almost surely, 2^215054143 is an apocalyptic number.

215054143 is a deficient number, since it is larger than the sum of its proper divisors (5245265).

215054143 is an equidigital number, since it uses as much as digits as its factorization.

215054143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5245264.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 215054143 is about 14664.7244433709. The cubic root of 215054143 is about 599.1229250053.

The spelling of 215054143 in words is "two hundred fifteen million, fifty-four thousand, one hundred forty-three".