55833281 has 4 divisors (see below), whose sum is σ = 63809472. Its totient is φ = 47857092.

The previous prime is 55833257. The next prime is 55833299. The reversal of 55833281 is 18233855.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55833281 is a prime.

It is a super-2 number, since 2×55833281² = 6234710534449922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55833241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3988085 + ... + 3988098.

It is an arithmetic number, because the mean of its divisors is an integer number (15952368).

Almost surely, 2^55833281 is an apocalyptic number.

It is an amenable number.

55833281 is a deficient number, since it is larger than the sum of its proper divisors (7976191).

55833281 is an equidigital number, since it uses as much as digits as its factorization.

55833281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7976190.

The product of its digits is 28800, while the sum is 35.

The square root of 55833281 is about 7472.1670886029. The cubic root of 55833281 is about 382.2061901395.

The spelling of 55833281 in words is "fifty-five million, eight hundred thirty-three thousand, two hundred eighty-one".