54577633921 has 2 divisors, whose sum is σ = 54577633922. Its totient is φ = 54577633920.

The previous prime is 54577633811. The next prime is 54577633963. The reversal of 54577633921 is 12933677545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53805905521 + 771728400 = 231961^2 + 27780^2 .

It is a cyclic number.

It is not a de Polignac number, because 54577633921 - 2¹⁷ = 54577502849 is a prime.

It is not a weakly prime, because it can be changed into another prime (54577643921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27288816960 + 27288816961.

It is an arithmetic number, because the mean of its divisors is an integer number (27288816961).

Almost surely, 2^54577633921 is an apocalyptic number.

It is an amenable number.

54577633921 is a deficient number, since it is larger than the sum of its proper divisors (1).

54577633921 is an equidigital number, since it uses as much as digits as its factorization.

54577633921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4762800, while the sum is 52.

The spelling of 54577633921 in words is "fifty-four billion, five hundred seventy-seven million, six hundred thirty-three thousand, nine hundred twenty-one".