55454121511 has 4 divisors (see below), whose sum is σ = 55454698024. Its totient is φ = 55453545000.

The previous prime is 55454121469. The next prime is 55454121539. The reversal of 55454121511 is 11512145455.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 55454121511 - 2⁷ = 55454121383 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 (55454121571) 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, 105240 + ... + 349261.

It is an arithmetic number, because the mean of its divisors is an integer number (13863674506).

Almost surely, 2^55454121511 is an apocalyptic number.

55454121511 is a deficient number, since it is larger than the sum of its proper divisors (576513).

55454121511 is a wasteful number, since it uses less digits than its factorization.

55454121511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576512.

The product of its digits is 20000, while the sum is 34.

Adding to 55454121511 its reverse (11512145455), we get a palindrome (66966266966).

The spelling of 55454121511 in words is "fifty-five billion, four hundred fifty-four million, one hundred twenty-one thousand, five hundred eleven".