54457356321 has 81 divisors (see below), whose sum is σ = 84892412241. Its totient is φ = 34931341368.

The previous prime is 54457356319. The next prime is 54457356361. The reversal of 54457356321 is 12365375445.

The square root of 54457356321 is 233361.

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

54457356321 is a `hidden beast` number, since 5 + 4 + 4 + 5 + 7 + 3 + 5 + 632 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (81).

It is not a de Polignac number, because 54457356321 - 2¹ = 54457356319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54457356311) 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, 812796330 + ... + 812796396.

Almost surely, 2^54457356321 is an apocalyptic number.

54457356321 is the 233361-st square number.

54457356321 is the 116681-st centered octagonal number.

It is an amenable number.

54457356321 is a deficient number, since it is larger than the sum of its proper divisors (30435055920).

54457356321 is an frugal number, since it uses more digits than its factorization.

54457356321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 113 counting only the distinct ones).

The product of its digits is 1512000, while the sum is 45.

The spelling of 54457356321 in words is "fifty-four billion, four hundred fifty-seven million, three hundred fifty-six thousand, three hundred twenty-one".