54084721 has 4 divisors (see below), whose sum is σ = 54164592. Its totient is φ = 54004852.

The previous prime is 54084703. The next prime is 54084749. The reversal of 54084721 is 12748045.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54084721 - 2⁵ = 54084689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54084421) 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, 38911 + ... + 40276.

It is an arithmetic number, because the mean of its divisors is an integer number (13541148).

Almost surely, 2^54084721 is an apocalyptic number.

It is an amenable number.

54084721 is a deficient number, since it is larger than the sum of its proper divisors (79871).

54084721 is an equidigital number, since it uses as much as digits as its factorization.

54084721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79870.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 54084721 is about 7354.2315030192. The cubic root of 54084721 is about 378.1738816300.

The spelling of 54084721 in words is "fifty-four million, eighty-four thousand, seven hundred twenty-one".