55431105533 has 8 divisors (see below), whose sum is σ = 58441014720. Its totient is φ = 52430444640.

The previous prime is 55431105523. The next prime is 55431105551. The reversal of 55431105533 is 33550113455.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55431105533 - 2¹⁸ = 55430843389 is a prime.

It is a super-2 number, since 2×55431105533² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55431105493 and 55431105502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55431105523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2299760 + ... + 2323737.

It is an arithmetic number, because the mean of its divisors is an integer number (7305126840).

Almost surely, 2^55431105533 is an apocalyptic number.

It is an amenable number.

55431105533 is a deficient number, since it is larger than the sum of its proper divisors (3009909187).

55431105533 is a wasteful number, since it uses less digits than its factorization.

55431105533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4624147.

The product of its (nonzero) digits is 67500, while the sum is 35.

Adding to 55431105533 its reverse (33550113455), we get a palindrome (88981218988).

The spelling of 55431105533 in words is "fifty-five billion, four hundred thirty-one million, one hundred five thousand, five hundred thirty-three".