2151132551 has 4 divisors (see below), whose sum is σ = 2161327704. Its totient is φ = 2140937400.

The previous prime is 2151132479. The next prime is 2151132559. The reversal of 2151132551 is 1552311512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2151132551 - 2¹⁴ = 2151116167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2151132551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151132559) 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, 5097260 + ... + 5097681.

It is an arithmetic number, because the mean of its divisors is an integer number (540331926).

Almost surely, 2^2151132551 is an apocalyptic number.

2151132551 is a deficient number, since it is larger than the sum of its proper divisors (10195153).

2151132551 is a wasteful number, since it uses less digits than its factorization.

2151132551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10195152.

The product of its digits is 1500, while the sum is 26.

The square root of 2151132551 is about 46380.3034811115. The cubic root of 2151132551 is about 1290.8894674872.

The spelling of 2151132551 in words is "two billion, one hundred fifty-one million, one hundred thirty-two thousand, five hundred fifty-one".