54996721 has 8 divisors (see below), whose sum is σ = 60488064. Its totient is φ = 49685520.

The previous prime is 54996707. The next prime is 54996737. The reversal of 54996721 is 12769945.

It is a happy number.

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 54996721 - 2⁷ = 54996593 is a prime.

54996721 is a modest number, since divided by 6721 gives 5499 as remainder.

It is not an unprimeable number, because it can be changed into a prime (54996121) 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, 44395 + ... + 45616.

It is an arithmetic number, because the mean of its divisors is an integer number (7561008).

Almost surely, 2^54996721 is an apocalyptic number.

It is an amenable number.

54996721 is a deficient number, since it is larger than the sum of its proper divisors (5491343).

54996721 is a wasteful number, since it uses less digits than its factorization.

54996721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90071.

The product of its digits is 136080, while the sum is 43.

The square root of 54996721 is about 7415.9774136657. The cubic root of 54996721 is about 380.2876884222.

The spelling of 54996721 in words is "fifty-four million, nine hundred ninety-six thousand, seven hundred twenty-one".