54625546561 has 4 divisors (see below), whose sum is σ = 54626383152. Its totient is φ = 54624709972.

The previous prime is 54625546559. The next prime is 54625546571. The reversal of 54625546561 is 16564552645.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16564552645 = 5 ⋅3312910529.

It is a cyclic number.

It is not a de Polignac number, because 54625546561 - 2¹ = 54625546559 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54625546541) 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, 311215 + ... + 453988.

It is an arithmetic number, because the mean of its divisors is an integer number (13656595788).

Almost surely, 2^54625546561 is an apocalyptic number.

It is an amenable number.

54625546561 is a deficient number, since it is larger than the sum of its proper divisors (836591).

54625546561 is an equidigital number, since it uses as much as digits as its factorization.

54625546561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836590.

The product of its digits is 4320000, while the sum is 49.

The spelling of 54625546561 in words is "fifty-four billion, six hundred twenty-five million, five hundred forty-six thousand, five hundred sixty-one".