2171132551 has 16 divisors (see below), whose sum is σ = 2494356480. Its totient is φ = 1851202080.

The previous prime is 2171132539. The next prime is 2171132569. The reversal of 2171132551 is 1552311712.

It is not a de Polignac number, because 2171132551 - 2⁷ = 2171132423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171132351) 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, 1957185 + ... + 1958293.

It is an arithmetic number, because the mean of its divisors is an integer number (155897280).

Almost surely, 2^2171132551 is an apocalyptic number.

2171132551 is a deficient number, since it is larger than the sum of its proper divisors (323223929).

2171132551 is a wasteful number, since it uses less digits than its factorization.

2171132551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334.

The product of its digits is 2100, while the sum is 28.

The square root of 2171132551 is about 46595.4134116224. The cubic root of 2171132551 is about 1294.8777831719.

The spelling of 2171132551 in words is "two billion, one hundred seventy-one million, one hundred thirty-two thousand, five hundred fifty-one".