5481034827921 has 45 divisors (see below), whose sum is σ = 8641963132473. Its totient is φ = 3461453361720.

The previous prime is 5481034827913. The next prime is 5481034827937. The reversal of 5481034827921 is 1297284301845.

The square root of 5481034827921 is 2341161.

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

5481034827921 is a `hidden beast` number, since 5 + 4 + 8 + 1 + 0 + 348 + 279 + 21 = 666.

It is not a de Polignac number, because 5481034827921 - 2³ = 5481034827913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5481034827911) 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, 400331686 + ... + 400345376.

Almost surely, 2^{5481034827921} is an apocalyptic number.

5481034827921 is the 2341161-st square number.

5481034827921 is the 1170581-st centered octagonal number.

It is an amenable number.

5481034827921 is a deficient number, since it is larger than the sum of its proper divisors (3160928304552).

5481034827921 is an frugal number, since it uses more digits than its factorization.

5481034827921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27432 (or 13713 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 5481034827921 in words is "five trillion, four hundred eighty-one billion, thirty-four million, eight hundred twenty-seven thousand, nine hundred twenty-one".