55320459 has 8 divisors (see below), whose sum is σ = 73849920. Its totient is φ = 36835656.

The previous prime is 55320437. The next prime is 55320467. The reversal of 55320459 is 95402355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55320459 - 2¹¹ = 55318411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55320409) 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, 8157 + ... + 13310.

It is an arithmetic number, because the mean of its divisors is an integer number (9231240).

Almost surely, 2^55320459 is an apocalyptic number.

55320459 is a deficient number, since it is larger than the sum of its proper divisors (18529461).

55320459 is a wasteful number, since it uses less digits than its factorization.

55320459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22329.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 55320459 is about 7437.7724487914. The cubic root of 55320459 is about 381.0324164178.

It can be divided in two parts, 553 and 20459, that added together give a palindrome (21012).

The spelling of 55320459 in words is "fifty-five million, three hundred twenty thousand, four hundred fifty-nine".