55444420033 has 4 divisors (see below), whose sum is σ = 55460773888. Its totient is φ = 55428066180.

The previous prime is 55444419983. The next prime is 55444420039. The reversal of 55444420033 is 33002444455.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33002444455 = 5 ⋅6600488891.

It is a cyclic number.

It is not a de Polignac number, because 55444420033 - 2¹⁷ = 55444288961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55444420039) 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, 8171841 + ... + 8178622.

It is an arithmetic number, because the mean of its divisors is an integer number (13865193472).

Almost surely, 2^55444420033 is an apocalyptic number.

It is an amenable number.

55444420033 is a deficient number, since it is larger than the sum of its proper divisors (16353855).

55444420033 is a wasteful number, since it uses less digits than its factorization.

55444420033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16353854.

The product of its (nonzero) digits is 115200, while the sum is 34.

Adding to 55444420033 its reverse (33002444455), we get a palindrome (88446864488).

The spelling of 55444420033 in words is "fifty-five billion, four hundred forty-four million, four hundred twenty thousand, thirty-three".