2153155481 has 2 divisors, whose sum is σ = 2153155482. Its totient is φ = 2153155480.

The previous prime is 2153155457. The next prime is 2153155517. The reversal of 2153155481 is 1845513512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1163423881 + 989731600 = 34109^2 + 31460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2153155481 is a prime.

It is a super-2 number, since 2×2153155481² = 9272157050720682722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2153155441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076577740 + 1076577741.

It is an arithmetic number, because the mean of its divisors is an integer number (1076577741).

Almost surely, 2^2153155481 is an apocalyptic number.

It is an amenable number.

2153155481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2153155481 is an equidigital number, since it uses as much as digits as its factorization.

2153155481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24000, while the sum is 35.

The square root of 2153155481 is about 46402.1064284802. The cubic root of 2153155481 is about 1291.2939925167.

Adding to 2153155481 its reverse (1845513512), we get a palindrome (3998668993).

The spelling of 2153155481 in words is "two billion, one hundred fifty-three million, one hundred fifty-five thousand, four hundred eighty-one".