55292321 has 8 divisors (see below), whose sum is σ = 63771840. Its totient is φ = 46957968.

The previous prime is 55292311. The next prime is 55292327. The reversal of 55292321 is 12329255.

55292321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55292321 - 2¹⁰ = 55291297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55292327) 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 7 ways as a sum of consecutive naturals, for example, 35471 + ... + 36996.

It is an arithmetic number, because the mean of its divisors is an integer number (7971480).

Almost surely, 2^55292321 is an apocalyptic number.

It is an amenable number.

55292321 is a deficient number, since it is larger than the sum of its proper divisors (8479519).

55292321 is a wasteful number, since it uses less digits than its factorization.

55292321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72583.

The product of its digits is 5400, while the sum is 29.

The square root of 55292321 is about 7435.8806472401. The cubic root of 55292321 is about 380.9678031408.

The spelling of 55292321 in words is "fifty-five million, two hundred ninety-two thousand, three hundred twenty-one".