54795721 has 4 divisors (see below), whose sum is σ = 56132244. Its totient is φ = 53459200.

The previous prime is 54795701. The next prime is 54795731. The reversal of 54795721 is 12759745.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2073600 + 52722121 = 1440^2 + 7261^2 .

It is a cyclic number.

It is not a de Polignac number, because 54795721 - 2⁷ = 54795593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54795701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668200 + ... + 668281.

It is an arithmetic number, because the mean of its divisors is an integer number (14033061).

Almost surely, 2^54795721 is an apocalyptic number.

It is an amenable number.

54795721 is a deficient number, since it is larger than the sum of its proper divisors (1336523).

54795721 is a wasteful number, since it uses less digits than its factorization.

54795721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336522.

The product of its digits is 88200, while the sum is 40.

The square root of 54795721 is about 7402.4131876031. The cubic root of 54795721 is about 379.8238357038.

The spelling of 54795721 in words is "fifty-four million, seven hundred ninety-five thousand, seven hundred twenty-one".