55357421133 has 16 divisors (see below), whose sum is σ = 84674912256. Its totient is φ = 31512532080.

The previous prime is 55357421107. The next prime is 55357421143. The reversal of 55357421133 is 33112475355.

It is not a de Polignac number, because 55357421133 - 2¹⁶ = 55357355597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55357421091 and 55357421100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55357421143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5006013 + ... + 5017058.

It is an arithmetic number, because the mean of its divisors is an integer number (5292182016).

Almost surely, 2^55357421133 is an apocalyptic number.

It is an amenable number.

55357421133 is a deficient number, since it is larger than the sum of its proper divisors (29317491123).

55357421133 is a wasteful number, since it uses less digits than its factorization.

55357421133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10023344.

The product of its digits is 189000, while the sum is 39.

Adding to 55357421133 its reverse (33112475355), we get a palindrome (88469896488).

It can be divided in two parts, 553 and 57421133, that added together give a triangular number (57421686 = T₁₀₇₁₆).

The spelling of 55357421133 in words is "fifty-five billion, three hundred fifty-seven million, four hundred twenty-one thousand, one hundred thirty-three".