55253543551 has 4 divisors (see below), whose sum is σ = 55255143112. Its totient is φ = 55251943992.

The previous prime is 55253543491. The next prime is 55253543567. The reversal of 55253543551 is 15534535255.

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 55253543551 - 2²⁷ = 55119325823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55253543498 and 55253543507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55253523551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 746796 + ... + 817441.

It is an arithmetic number, because the mean of its divisors is an integer number (13813785778).

Almost surely, 2^55253543551 is an apocalyptic number.

55253543551 is a deficient number, since it is larger than the sum of its proper divisors (1599561).

55253543551 is a wasteful number, since it uses less digits than its factorization.

55253543551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1599560.

The product of its digits is 1125000, while the sum is 43.

The spelling of 55253543551 in words is "fifty-five billion, two hundred fifty-three million, five hundred forty-three thousand, five hundred fifty-one".