54921216483225 has 81 divisors (see below), whose sum is σ = 98658151607197. Its totient is φ = 29205764201280.

The previous prime is 54921216483187. The next prime is 54921216483229. The reversal of 54921216483225 is 52238461212945.

The square root of 54921216483225 is 7410885.

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

54921216483225 is a `hidden beast` number, since 5 + 49 + 21 + 216 + 48 + 322 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 18882614140569 + 36038602342656 = 4345413^2 + 6003216^2 .

It is not a de Polignac number, because 54921216483225 - 2³¹ = 54919068999577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54921216483229) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 61917943732 + ... + 61917944618.

Almost surely, 2^{54921216483225} is an apocalyptic number.

54921216483225 is the 7410885-th square number.

54921216483225 is the 3705443-rd centered octagonal number.

It is an amenable number.

54921216483225 is a deficient number, since it is larger than the sum of its proper divisors (43736935123972).

54921216483225 is an frugal number, since it uses more digits than its factorization.

54921216483225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2904 (or 1452 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 54.

The spelling of 54921216483225 in words is "fifty-four trillion, nine hundred twenty-one billion, two hundred sixteen million, four hundred eighty-three thousand, two hundred twenty-five".