2171513151 has 16 divisors (see below), whose sum is σ = 3246575200. Its totient is φ = 1434392064.

The previous prime is 2171513111. The next prime is 2171513159. The reversal of 2171513151 is 1513151712.

It is not a de Polignac number, because 2171513151 - 2⁶ = 2171513087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171513159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365986 + ... + 371871.

It is an arithmetic number, because the mean of its divisors is an integer number (202910950).

Almost surely, 2^2171513151 is an apocalyptic number.

2171513151 is a deficient number, since it is larger than the sum of its proper divisors (1075062049).

2171513151 is a wasteful number, since it uses less digits than its factorization.

2171513151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737975 (or 737969 counting only the distinct ones).

The product of its digits is 1050, while the sum is 27.

The square root of 2171513151 is about 46599.4973256150. The cubic root of 2171513151 is about 1294.9534428684.

Adding to 2171513151 its reverse (1513151712), we get a palindrome (3684664863).

The spelling of 2171513151 in words is "two billion, one hundred seventy-one million, five hundred thirteen thousand, one hundred fifty-one".