2155331415 has 16 divisors (see below), whose sum is σ = 3482676576. Its totient is φ = 1138128000.

The previous prime is 2155331413. The next prime is 2155331429. The reversal of 2155331415 is 5141335512.

It is not a de Polignac number, because 2155331415 - 2¹ = 2155331413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155331411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 709816 + ... + 712845.

It is an arithmetic number, because the mean of its divisors is an integer number (217667286).

Almost surely, 2^2155331415 is an apocalyptic number.

2155331415 is a deficient number, since it is larger than the sum of its proper divisors (1327345161).

2155331415 is a wasteful number, since it uses less digits than its factorization.

2155331415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422770.

The product of its digits is 9000, while the sum is 30.

The square root of 2155331415 is about 46425.5470080860. The cubic root of 2155331415 is about 1291.7288309913.

Adding to 2155331415 its reverse (5141335512), we get a palindrome (7296666927).

The spelling of 2155331415 in words is "two billion, one hundred fifty-five million, three hundred thirty-one thousand, four hundred fifteen".