55213833 has 8 divisors (see below), whose sum is σ = 73656000. Its totient is φ = 36790448.

The previous prime is 55213831. The next prime is 55213843. The reversal of 55213833 is 33831255.

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 55213833 - 2¹ = 55213831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55213833.

It is not an unprimeable number, because it can be changed into a prime (55213831) 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, 5068 + ... + 11666.

It is an arithmetic number, because the mean of its divisors is an integer number (9207000).

Almost surely, 2^55213833 is an apocalyptic number.

It is an amenable number.

55213833 is a deficient number, since it is larger than the sum of its proper divisors (18442167).

55213833 is a wasteful number, since it uses less digits than its factorization.

55213833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9391.

The product of its digits is 10800, while the sum is 30.

The square root of 55213833 is about 7430.6011196942. The cubic root of 55213833 is about 380.7874552492.

The spelling of 55213833 in words is "fifty-five million, two hundred thirteen thousand, eight hundred thirty-three".