54721562321 has 4 divisors (see below), whose sum is σ = 54731030592. Its totient is φ = 54712094052.

The previous prime is 54721562309. The next prime is 54721562333. The reversal of 54721562321 is 12326512745.

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 an interprime number because it is at equal distance from previous prime (54721562309) and next prime (54721562333).

It is a cyclic number.

It is not a de Polignac number, because 54721562321 - 2²⁶ = 54654453457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54721562221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4725461 + ... + 4737026.

It is an arithmetic number, because the mean of its divisors is an integer number (13682757648).

Almost surely, 2^54721562321 is an apocalyptic number.

It is an amenable number.

54721562321 is a deficient number, since it is larger than the sum of its proper divisors (9468271).

54721562321 is an equidigital number, since it uses as much as digits as its factorization.

54721562321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9468270.

The product of its digits is 100800, while the sum is 38.

The spelling of 54721562321 in words is "fifty-four billion, seven hundred twenty-one million, five hundred sixty-two thousand, three hundred twenty-one".