54479761281 has 45 divisors (see below), whose sum is σ = 86696580945. Its totient is φ = 32966687160.

The previous prime is 54479761247. The next prime is 54479761307. The reversal of 54479761281 is 18216797445.

The square root of 54479761281 is 233409.

It is a perfect power (a square), and thus also a powerful number.

54479761281 is a `hidden beast` number, since 5 + 447 + 9 + 76 + 128 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-54479761281 is a prime.

It is a super-2 number, since 2×54479761281² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54479761211) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 84727146 + ... + 84727788.

Almost surely, 2^54479761281 is an apocalyptic number.

54479761281 is the 233409-th square number.

54479761281 is the 116705-th centered octagonal number.

It is an amenable number.

54479761281 is a deficient number, since it is larger than the sum of its proper divisors (32216819664).

54479761281 is an frugal number, since it uses more digits than its factorization.

54479761281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336 (or 657 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The spelling of 54479761281 in words is "fifty-four billion, four hundred seventy-nine million, seven hundred sixty-one thousand, two hundred eighty-one".