54726721 has 8 divisors (see below), whose sum is σ = 63190400. Its totient is φ = 46424448.

The previous prime is 54726709. The next prime is 54726731. The reversal of 54726721 is 12762745.

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

It is not a de Polignac number, because 54726721 - 2⁹ = 54726209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54726701) 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, 39621 + ... + 40978.

It is an arithmetic number, because the mean of its divisors is an integer number (7898800).

Almost surely, 2^54726721 is an apocalyptic number.

It is an amenable number.

54726721 is a deficient number, since it is larger than the sum of its proper divisors (8463679).

54726721 is an equidigital number, since it uses as much as digits as its factorization.

54726721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80703.

The product of its digits is 23520, while the sum is 34.

The square root of 54726721 is about 7397.7510771856. The cubic root of 54726721 is about 379.6643411764.

The spelling of 54726721 in words is "fifty-four million, seven hundred twenty-six thousand, seven hundred twenty-one".