55431505554 has 16 divisors (see below), whose sum is σ = 114685873920. Its totient is φ = 17840024720.

The previous prime is 55431505553. The next prime is 55431505567. The reversal of 55431505554 is 45550513455.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55431505553) 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, 159285762 + ... + 159286109.

It is an arithmetic number, because the mean of its divisors is an integer number (7167867120).

Almost surely, 2^55431505554 is an apocalyptic number.

55431505554 is an abundant number, since it is smaller than the sum of its proper divisors (59254368366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55431505554 is a wasteful number, since it uses less digits than its factorization.

55431505554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318571905.

The product of its (nonzero) digits is 750000, while the sum is 42.

The spelling of 55431505554 in words is "fifty-five billion, four hundred thirty-one million, five hundred five thousand, five hundred fifty-four".