54559091945 has 16 divisors (see below), whose sum is σ = 69691104000. Its totient is φ = 40885435008.

The previous prime is 54559091941. The next prime is 54559091947. The reversal of 54559091945 is 54919095545.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 54559091945 - 2² = 54559091941 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54559091941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3217985 + ... + 3234894.

It is an arithmetic number, because the mean of its divisors is an integer number (4355694000).

Almost surely, 2^54559091945 is an apocalyptic number.

It is an amenable number.

54559091945 is a deficient number, since it is larger than the sum of its proper divisors (15132012055).

54559091945 is a wasteful number, since it uses less digits than its factorization.

54559091945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6452992.

The product of its (nonzero) digits is 7290000, while the sum is 56.

The spelling of 54559091945 in words is "fifty-four billion, five hundred fifty-nine million, ninety-one thousand, nine hundred forty-five".