55263421 has 8 divisors (see below), whose sum is σ = 57132800. Its totient is φ = 53399520.

The previous prime is 55263361. The next prime is 55263431. The reversal of 55263421 is 12436255.

55263421 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 55263421 - 2¹³ = 55255229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55263421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55263431) 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, 34210 + ... + 35788.

It is an arithmetic number, because the mean of its divisors is an integer number (7141600).

Almost surely, 2^55263421 is an apocalyptic number.

It is an amenable number.

55263421 is a deficient number, since it is larger than the sum of its proper divisors (1869379).

55263421 is a wasteful number, since it uses less digits than its factorization.

55263421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739.

The product of its digits is 7200, while the sum is 28.

The square root of 55263421 is about 7433.9371129974. The cubic root of 55263421 is about 380.9014172600.

Adding to 55263421 its reverse (12436255), we get a palindrome (67699676).

The spelling of 55263421 in words is "fifty-five million, two hundred sixty-three thousand, four hundred twenty-one".