54555045551 has 4 divisors (see below), whose sum is σ = 55479707400. Its totient is φ = 53630383704.

The previous prime is 54555045539. The next prime is 54555045557. The reversal of 54555045551 is 15554055545.

It is a happy number.

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 54555045551 - 2¹⁸ = 54554783407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54555045557) 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, 462330836 + ... + 462330953.

It is an arithmetic number, because the mean of its divisors is an integer number (13869926850).

Almost surely, 2^54555045551 is an apocalyptic number.

54555045551 is a deficient number, since it is larger than the sum of its proper divisors (924661849).

54555045551 is an equidigital number, since it uses as much as digits as its factorization.

54555045551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924661848.

The product of its (nonzero) digits is 1250000, while the sum is 44.

The spelling of 54555045551 in words is "fifty-four billion, five hundred fifty-five million, forty-five thousand, five hundred fifty-one".