2155214351 has 4 divisors (see below), whose sum is σ = 2164464432. Its totient is φ = 2145964272.

The previous prime is 2155214339. The next prime is 2155214357. The reversal of 2155214351 is 1534125512.

2155214351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-2155214351 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 (2155214357) 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, 4624691 + ... + 4625156.

It is an arithmetic number, because the mean of its divisors is an integer number (541116108).

Almost surely, 2^2155214351 is an apocalyptic number.

2155214351 is a deficient number, since it is larger than the sum of its proper divisors (9250081).

2155214351 is an equidigital number, since it uses as much as digits as its factorization.

2155214351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9250080.

The product of its digits is 6000, while the sum is 29.

The square root of 2155214351 is about 46424.2862196071. The cubic root of 2155214351 is about 1291.7054443819.

Adding to 2155214351 its reverse (1534125512), we get a palindrome (3689339863).

The spelling of 2155214351 in words is "two billion, one hundred fifty-five million, two hundred fourteen thousand, three hundred fifty-one".