54772921 has 4 divisors (see below), whose sum is σ = 62597632. Its totient is φ = 46948212.

The previous prime is 54772919. The next prime is 54772931. The reversal of 54772921 is 12927745.

54772921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12927745 = 5 ⋅2585549.

It is a cyclic number.

It is not a de Polignac number, because 54772921 - 2¹ = 54772919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54772901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3912345 + ... + 3912358.

It is an arithmetic number, because the mean of its divisors is an integer number (15649408).

Almost surely, 2^54772921 is an apocalyptic number.

It is an amenable number.

54772921 is a deficient number, since it is larger than the sum of its proper divisors (7824711).

54772921 is an equidigital number, since it uses as much as digits as its factorization.

54772921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7824710.

The product of its digits is 35280, while the sum is 37.

The square root of 54772921 is about 7400.8729890466. The cubic root of 54772921 is about 379.7711479836.

The spelling of 54772921 in words is "fifty-four million, seven hundred seventy-two thousand, nine hundred twenty-one".