2154215141 has 16 divisors (see below), whose sum is σ = 2396878848. Its totient is φ = 1922659200.

The previous prime is 2154215131. The next prime is 2154215179. The reversal of 2154215141 is 1415124512.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2154215141 - 2¹⁴ = 2154198757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2154215141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154215111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 752585 + ... + 755441.

It is an arithmetic number, because the mean of its divisors is an integer number (149804928).

Almost surely, 2^2154215141 is an apocalyptic number.

It is an amenable number.

2154215141 is a deficient number, since it is larger than the sum of its proper divisors (242663707).

2154215141 is a wasteful number, since it uses less digits than its factorization.

2154215141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4772.

The product of its digits is 1600, while the sum is 26.

The square root of 2154215141 is about 46413.5232556202. The cubic root of 2154215141 is about 1291.5057914623.

Adding to 2154215141 its reverse (1415124512), we get a palindrome (3569339653).

The spelling of 2154215141 in words is "two billion, one hundred fifty-four million, two hundred fifteen thousand, one hundred forty-one".