2135454551 has 4 divisors (see below), whose sum is σ = 2148241872. Its totient is φ = 2122667232.

The previous prime is 2135454547. The next prime is 2135454571. The reversal of 2135454551 is 1554545312.

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 2135454551 - 2² = 2135454547 is a prime.

It is a super-2 number, since 2×2135454551² = 9120332278773223202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2135454521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6393410 + ... + 6393743.

It is an arithmetic number, because the mean of its divisors is an integer number (537060468).

Almost surely, 2^2135454551 is an apocalyptic number.

2135454551 is a deficient number, since it is larger than the sum of its proper divisors (12787321).

2135454551 is a wasteful number, since it uses less digits than its factorization.

2135454551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12787320.

The product of its digits is 60000, while the sum is 35.

The square root of 2135454551 is about 46210.9786847238. The cubic root of 2135454551 is about 1287.7457075409.

Adding to 2135454551 its reverse (1554545312), we get a palindrome (3689999863).

The spelling of 2135454551 in words is "two billion, one hundred thirty-five million, four hundred fifty-four thousand, five hundred fifty-one".