2102545551 has 8 divisors (see below), whose sum is σ = 2804059264. Its totient is φ = 1401364440.

The previous prime is 2102545541. The next prime is 2102545561. The reversal of 2102545551 is 1555452012.

It is an interprime number because it is at equal distance from previous prime (2102545541) and next prime (2102545561).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2102545551 - 2¹¹ = 2102543503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102545541) 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 7 ways as a sum of consecutive naturals, for example, 68005 + ... + 93966.

It is an arithmetic number, because the mean of its divisors is an integer number (350507408).

Almost surely, 2^2102545551 is an apocalyptic number.

2102545551 is a deficient number, since it is larger than the sum of its proper divisors (701513713).

2102545551 is a wasteful number, since it uses less digits than its factorization.

2102545551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166301.

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 2102545551 is about 45853.5227763364. The cubic root of 2102545551 is about 1281.0963813887.

Adding to 2102545551 its reverse (1555452012), we get a palindrome (3657997563).

The spelling of 2102545551 in words is "two billion, one hundred two million, five hundred forty-five thousand, five hundred fifty-one".