54836425561 has 2 divisors, whose sum is σ = 54836425562. Its totient is φ = 54836425560.

The previous prime is 54836425531. The next prime is 54836425577. The reversal of 54836425561 is 16552463845.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30917947225 + 23918478336 = 175835^2 + 154656^2 .

It is a cyclic number.

It is not a de Polignac number, because 54836425561 - 2²³ = 54828036953 is a prime.

It is not a weakly prime, because it can be changed into another prime (54836425531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27418212780 + 27418212781.

It is an arithmetic number, because the mean of its divisors is an integer number (27418212781).

Almost surely, 2^54836425561 is an apocalyptic number.

It is an amenable number.

54836425561 is a deficient number, since it is larger than the sum of its proper divisors (1).

54836425561 is an equidigital number, since it uses as much as digits as its factorization.

54836425561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456000, while the sum is 49.

The spelling of 54836425561 in words is "fifty-four billion, eight hundred thirty-six million, four hundred twenty-five thousand, five hundred sixty-one".