55113305531 has 4 divisors (see below), whose sum is σ = 55164008832. Its totient is φ = 55062602232.

The previous prime is 55113305449. The next prime is 55113305561. The reversal of 55113305531 is 13550331155.

It is a happy number.

55113305531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55113305531 - 2¹⁰ = 55113304507 is a prime.

It is a super-3 number, since 3×55113305531³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55113305561) 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, 25350020 + ... + 25352193.

It is an arithmetic number, because the mean of its divisors is an integer number (13791002208).

Almost surely, 2^55113305531 is an apocalyptic number.

55113305531 is a deficient number, since it is larger than the sum of its proper divisors (50703301).

55113305531 is a wasteful number, since it uses less digits than its factorization.

55113305531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50703300.

The product of its (nonzero) digits is 16875, while the sum is 32.

Adding to 55113305531 its reverse (13550331155), we get a palindrome (68663636686).

The spelling of 55113305531 in words is "fifty-five billion, one hundred thirteen million, three hundred five thousand, five hundred thirty-one".