55421333 has 8 divisors (see below), whose sum is σ = 60540480. Its totient is φ = 50315680.

The previous prime is 55421323. The next prime is 55421357. The reversal of 55421333 is 33312455.

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 55421333 - 2⁶ = 55421269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55421323) 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, 6488 + ... + 12366.

It is an arithmetic number, because the mean of its divisors is an integer number (7567560).

Almost surely, 2^55421333 is an apocalyptic number.

It is an amenable number.

55421333 is a deficient number, since it is larger than the sum of its proper divisors (5119147).

55421333 is a wasteful number, since it uses less digits than its factorization.

55421333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6747.

The product of its digits is 5400, while the sum is 26.

The square root of 55421333 is about 7444.5505572869. The cubic root of 55421333 is about 381.2638734358.

Adding to 55421333 its reverse (33312455), we get a palindrome (88733788).

The spelling of 55421333 in words is "fifty-five million, four hundred twenty-one thousand, three hundred thirty-three".