54767721 has 8 divisors (see below), whose sum is σ = 73133280. Its totient is φ = 36456992.

The previous prime is 54767717. The next prime is 54767749. The reversal of 54767721 is 12776745.

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 54767721 - 2² = 54767717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54767721.

It is not an unprimeable number, because it can be changed into a prime (54767711) 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, 11316 + ... + 15413.

It is an arithmetic number, because the mean of its divisors is an integer number (9141660).

Almost surely, 2^54767721 is an apocalyptic number.

It is an amenable number.

54767721 is a deficient number, since it is larger than the sum of its proper divisors (18365559).

54767721 is a wasteful number, since it uses less digits than its factorization.

54767721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27415.

The product of its digits is 82320, while the sum is 39.

The square root of 54767721 is about 7400.5216708013. The cubic root of 54767721 is about 379.7591294385.

The spelling of 54767721 in words is "fifty-four million, seven hundred sixty-seven thousand, seven hundred twenty-one".