55431654557055 has 32 divisors (see below), whose sum is σ = 101690905096704. Its totient is φ = 25257643606656.

The previous prime is 55431654557053. The next prime is 55431654557063. The reversal of 55431654557055 is 55075545613455.

It is a happy number.

It is not a de Polignac number, because 55431654557055 - 2¹ = 55431654557053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55431654557055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55431654557051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 859773172 + ... + 859837641.

It is an arithmetic number, because the mean of its divisors is an integer number (3177840784272).

Almost surely, 2^{55431654557055} is an apocalyptic number.

55431654557055 is a deficient number, since it is larger than the sum of its proper divisors (46259250539649).

55431654557055 is a wasteful number, since it uses less digits than its factorization.

55431654557055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719611135.

The product of its (nonzero) digits is 157500000, while the sum is 60.

The spelling of 55431654557055 in words is "fifty-five trillion, four hundred thirty-one billion, six hundred fifty-four million, five hundred fifty-seven thousand, fifty-five".