54538101721 has 8 divisors (see below), whose sum is σ = 56993802624. Its totient is φ = 52136372400.

The previous prime is 54538101719. The next prime is 54538101743. The reversal of 54538101721 is 12710183545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54538101721 - 2¹ = 54538101719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54538101521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13490830 + ... + 13494871.

It is an arithmetic number, because the mean of its divisors is an integer number (7124225328).

Almost surely, 2^54538101721 is an apocalyptic number.

It is an amenable number.

54538101721 is a deficient number, since it is larger than the sum of its proper divisors (2455700903).

54538101721 is a wasteful number, since it uses less digits than its factorization.

54538101721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26985791.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 54538101721 in words is "fifty-four billion, five hundred thirty-eight million, one hundred one thousand, seven hundred twenty-one".