55285120637431 has 4 divisors (see below), whose sum is σ = 55285213264864. Its totient is φ = 55285028010000.

The previous prime is 55285120637419. The next prime is 55285120637471. The reversal of 55285120637431 is 13473602158255.

55285120637431 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 55285120637431 - 2⁹ = 55285120636919 is a prime.

It is a super-2 number, since 2×55285120637431² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55285120637471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45412590 + ... + 46614091.

It is an arithmetic number, because the mean of its divisors is an integer number (13821303316216).

Almost surely, 2^{55285120637431} is an apocalyptic number.

55285120637431 is a deficient number, since it is larger than the sum of its proper divisors (92627433).

55285120637431 is an equidigital number, since it uses as much as digits as its factorization.

55285120637431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92627432.

The product of its (nonzero) digits is 6048000, while the sum is 52.

The spelling of 55285120637431 in words is "fifty-five trillion, two hundred eighty-five billion, one hundred twenty million, six hundred thirty-seven thousand, four hundred thirty-one".