55040243530331 has 4 divisors (see below), whose sum is σ = 57937098453000. Its totient is φ = 52143388607664.

The previous prime is 55040243530313. The next prime is 55040243530339. The reversal of 55040243530331 is 13303534204055.

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 55040243530331 - 2¹⁰ = 55040243529307 is a prime.

It is a super-2 number, since 2×55040243530331² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55040243530339) 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, 1448427461306 + ... + 1448427461343.

It is an arithmetic number, because the mean of its divisors is an integer number (14484274613250).

Almost surely, 2^{55040243530331} is an apocalyptic number.

55040243530331 is a deficient number, since it is larger than the sum of its proper divisors (2896854922669).

55040243530331 is a wasteful number, since it uses less digits than its factorization.

55040243530331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2896854922668.

The product of its (nonzero) digits is 324000, while the sum is 38.

Adding to 55040243530331 its reverse (13303534204055), we get a palindrome (68343777734386).

The spelling of 55040243530331 in words is "fifty-five trillion, forty billion, two hundred forty-three million, five hundred thirty thousand, three hundred thirty-one".