9555795551 has 4 divisors (see below), whose sum is σ = 9558231600. Its totient is φ = 9553359504.

The previous prime is 9555795511. The next prime is 9555795559. The reversal of 9555795551 is 1555975559.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9555795551 is a prime.

It is a super-2 number, since 2×9555795551² (a number of 21 digits) 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 (9555795559) 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, 1212131 + ... + 1219988.

It is an arithmetic number, because the mean of its divisors is an integer number (2389557900).

Almost surely, 2^9555795551 is an apocalyptic number.

9555795551 is a deficient number, since it is larger than the sum of its proper divisors (2436049).

9555795551 is a wasteful number, since it uses less digits than its factorization.

9555795551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436048.

The product of its digits is 8859375, while the sum is 56.

The square root of 9555795551 is about 97753.7495495697. The cubic root of 9555795551 is about 2122.0500188378.

The spelling of 9555795551 in words is "nine billion, five hundred fifty-five million, seven hundred ninety-five thousand, five hundred fifty-one".